chore: update e2e code owners

* feat(invite-members): add hook for invite members component

* feat(invite-members): add component to handle invite member logic

* test(invite-members): add tests for the component

.github/CODEOWNERS

@@ -138,7 +138,7 @@ go.mod @therealpandey
 /tests/integration/ @therealpandey
 
 # e2e tests
-/tests/e2e/ @AshwinBhatkal
+/tests/e2e/ @SigNoz/frontend-maintainers
 
 # Flagger Owners
 

frontend/src/components/InviteMembers/InviteMembers.module.scss

@@ -0,0 +1,163 @@
+.inviteMembers {
+	display: flex;
+	flex-direction: column;
+	gap: var(--spacing-8);
+	width: 100%;
+}
+
+.table {
+	display: flex;
+	flex-direction: column;
+	gap: var(--spacing-4);
+	width: 100%;
+}
+
+.header {
+	display: flex;
+	gap: var(--spacing-8);
+	align-items: center;
+	width: 100%;
+}
+
+.headerCellEmail {
+	flex: 1 1 0;
+	min-width: 0;
+}
+
+.headerCellRole {
+	flex: 0 0 160px;
+	width: 160px;
+}
+
+.headerCellAction {
+	flex: 0 0 32px;
+	width: 32px;
+}
+
+.rows {
+	display: flex;
+	flex-direction: column;
+	gap: var(--spacing-6);
+	width: 100%;
+}
+
+.row {
+	display: flex;
+	gap: var(--spacing-8);
+	align-items: flex-start;
+	width: 100%;
+}
+
+.cellEmail {
+	display: flex;
+	flex-direction: column;
+	gap: var(--spacing-2);
+	flex: 1 1 0;
+	min-width: 0;
+
+	--input-background: var(
+		--invite-members-field-background,
+		var(--l2-background)
+	);
+	--input-hover-background: var(
+		--invite-members-field-background,
+		var(--l2-background)
+	);
+	--input-focus-background: var(
+		--invite-members-field-background,
+		var(--l2-background)
+	);
+	--input-disabled-background: var(
+		--invite-members-field-background,
+		var(--l2-background)
+	);
+
+	input::placeholder {
+		color: var(--l3-foreground);
+	}
+}
+
+.cellRole {
+	display: flex;
+	flex-direction: column;
+	gap: var(--spacing-2);
+	flex: 0 0 160px;
+	width: 160px;
+
+	:global(.roles-single-select) {
+		width: 100%;
+
+		:global(.ant-select-selector) {
+			background-color: var(
+				--invite-members-field-background,
+				var(--l2-background)
+			) !important;
+		}
+	}
+}
+
+.cellAction {
+	display: flex;
+	flex-direction: column;
+	gap: var(--spacing-2);
+	flex: 0 0 32px;
+	width: 32px;
+	height: 32px;
+	align-items: center;
+	justify-content: center;
+}
+
+.errorText {
+	color: var(--danger-background);
+}
+
+.addRow {
+	display: flex;
+	justify-content: flex-start;
+	margin-top: var(--spacing-2);
+}
+
+.callout {
+	animation: shake 300ms ease-out;
+
+	&[data-type='success'] {
+		animation: none;
+	}
+}
+
+.results {
+	display: flex;
+	flex-direction: column;
+	gap: var(--spacing-2);
+}
+
+.resultsList {
+	margin: var(--spacing-2) 0 0 var(--spacing-8);
+	padding: 0;
+
+	li {
+		margin-bottom: var(--spacing-1);
+	}
+}
+
+@keyframes shake {
+	0% {
+		transform: translateX(0);
+	}
+
+	25% {
+		transform: translateX(5px);
+	}
+
+	50% {
+		transform: translateX(-5px);
+	}
+
+	75% {
+		transform: translateX(5px);
+	}
+
+	100% {
+		transform: translateX(0);
+	}
+}

frontend/src/components/InviteMembers/InviteMembers.tsx

@@ -0,0 +1,221 @@
+import { CircleAlert, Plus, Trash2 } from '@signozhq/icons';
+import { Button } from '@signozhq/ui/button';
+import { Callout } from '@signozhq/ui/callout';
+import { Input } from '@signozhq/ui/input';
+import { Typography } from '@signozhq/ui/typography';
+import cx from 'classnames';
+import RolesSelect from 'components/RolesSelect/RolesSelect';
+
+import styles from './InviteMembers.module.scss';
+import { InviteMembersProps } from './types';
+import { useInviteMembers } from './useInviteMembers';
+
+function InviteMembers({
+	className,
+	initialRowCount = 3,
+	minRows = 1,
+	emailPlaceholder = 'e.g. john@signoz.io',
+	showHeader = true,
+	showAddButton = true,
+	onSuccess,
+	onPartialSuccess,
+	onAllFailed,
+	renderFooter,
+}: InviteMembersProps): JSX.Element {
+	const {
+		rows,
+		emailValidity,
+		hasInvalidEmails,
+		hasInvalidRoles,
+		isSubmitting,
+		inviteResults,
+		addRow,
+		removeRow,
+		updateEmail,
+		updateRole,
+		reset,
+		submit,
+		touchedRows,
+		failedResults,
+		successResults,
+	} = useInviteMembers({
+		initialRowCount,
+		onSuccess,
+		onPartialSuccess,
+		onAllFailed,
+	});
+
+	const canSubmit = !isSubmitting && touchedRows.length > 0;
+	const canRemoveRow = rows.length > minRows;
+
+	const getValidationErrorMessage = (): string => {
+		if (hasInvalidEmails && hasInvalidRoles) {
+			return 'Please enter valid emails and select roles for team members';
+		}
+		if (hasInvalidEmails) {
+			return 'Please enter valid emails for team members';
+		}
+		return 'Please select roles for team members';
+	};
+
+	const hasValidationErrors = hasInvalidEmails || hasInvalidRoles;
+	const hasResults = inviteResults !== null;
+	const hasFailures = failedResults.length > 0;
+	const hasSuccesses = successResults.length > 0;
+
+	return (
+		<div className={cx(styles.inviteMembers, className)}>
+			<div className={styles.table}>
+				{showHeader && (
+					<div className={styles.header}>
+						<Typography.Text
+							size="base"
+							weight="semibold"
+							className={styles.headerCellEmail}
+						>
+							Email address
+						</Typography.Text>
+						<Typography.Text
+							size="base"
+							weight="semibold"
+							className={styles.headerCellRole}
+						>
+							Role
+						</Typography.Text>
+						<div className={styles.headerCellAction} />
+					</div>
+				)}
+
+				<div className={styles.rows}>
+					{rows.map((row) => (
+						<div key={row.id} className={styles.row}>
+							<div className={styles.cellEmail}>
+								<Input
+									type="email"
+									placeholder={emailPlaceholder}
+									value={row.email}
+									onChange={(e): void => updateEmail(row.id, e.target.value)}
+									name={`invite-email-${row.id}`}
+									autoComplete="email"
+									data-testid={`invite-email-${row.id}`}
+								/>
+								{emailValidity[row.id] === false && row.email.trim() !== '' && (
+									<Typography.Text size="small" className={styles.errorText}>
+										Invalid email address
+									</Typography.Text>
+								)}
+							</div>
+
+							<div className={styles.cellRole}>
+								<RolesSelect
+									mode="single"
+									value={row.roleId || undefined}
+									onChange={(roleId): void => updateRole(row.id, roleId)}
+									placeholder="Select role"
+									allowClear={false}
+									id={`invite-role-${row.id}`}
+								/>
+							</div>
+
+							<div className={styles.cellAction}>
+								{canRemoveRow && (
+									<Button
+										variant="ghost"
+										color="destructive"
+										onClick={(): void => removeRow(row.id)}
+										aria-label="Remove row"
+										data-testid={`invite-remove-${row.id}`}
+									>
+										<Trash2 size={12} />
+									</Button>
+								)}
+							</div>
+						</div>
+					))}
+				</div>
+
+				{showAddButton && (
+					<div className={styles.addRow}>
+						<Button
+							variant="dashed"
+							color="secondary"
+							prefix={<Plus size={12} />}
+							onClick={addRow}
+							data-testid="invite-add-row"
+						>
+							Add another
+						</Button>
+					</div>
+				)}
+			</div>
+
+			{hasValidationErrors && (
+				<Callout
+					type="error"
+					size="small"
+					showIcon
+					icon={<CircleAlert size={12} />}
+					className={styles.callout}
+					data-testid="invite-validation-error"
+				>
+					{getValidationErrorMessage()}
+				</Callout>
+			)}
+
+			{hasResults && hasFailures && (
+				<Callout
+					type="error"
+					size="small"
+					showIcon
+					icon={<CircleAlert size={12} />}
+					className={styles.callout}
+					data-testid="invite-api-error"
+				>
+					<div className={styles.results}>
+						{hasSuccesses && (
+							<Typography.Text size="small">
+								{successResults.length} invite(s) sent successfully.
+							</Typography.Text>
+						)}
+						<Typography.Text size="small">
+							{failedResults.length} invite(s) failed:
+						</Typography.Text>
+						<ul className={styles.resultsList}>
+							{failedResults.map((result) => (
+								<li key={result.email}>
+									<Typography.Text size="small">
+										{result.email}: {result.error}
+									</Typography.Text>
+								</li>
+							))}
+						</ul>
+					</div>
+				</Callout>
+			)}
+
+			{hasResults && !hasFailures && hasSuccesses && (
+				<Callout
+					type="success"
+					size="small"
+					showIcon
+					className={styles.callout}
+					data-testid="invite-success"
+				>
+					<Typography.Text size="small">
+						{successResults.length} invite(s) sent successfully!
+					</Typography.Text>
+				</Callout>
+			)}
+
+			{renderFooter?.({
+				submit,
+				reset,
+				canSubmit,
+				isSubmitting,
+				touchedCount: touchedRows.length,
+			})}
+		</div>
+	);
+}
+
+export default InviteMembers;

frontend/src/components/InviteMembers/__tests__/InviteMembers.edgeCases.test.tsx

@@ -0,0 +1,240 @@
+import { rest, server } from 'mocks-server/server';
+import { render, screen, userEvent, waitFor } from 'tests/test-utils';
+
+import InviteMembers from '../InviteMembers';
+
+import {
+	CREATE_USER_ENDPOINT,
+	createErrorHandler,
+	createRolesHandler,
+	createSuccessHandler,
+	VALID_EMAIL,
+} from './testUtils';
+
+describe('InviteMembers - Edge Cases', () => {
+	beforeEach(() => {
+		server.use(createRolesHandler(), createSuccessHandler());
+	});
+
+	afterEach(() => {
+		server.resetHandlers();
+	});
+
+	describe('reset behavior', () => {
+		it('clears all rows when reset is called', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					initialRowCount={2}
+					renderFooter={({ reset }): JSX.Element => (
+						<button data-testid="reset-btn" onClick={reset}>
+							Reset
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+			await user.type(emailInputs[1], 'bob@signoz.io');
+
+			await user.click(screen.getByTestId('reset-btn'));
+
+			const resetInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			expect(resetInputs).toHaveLength(2);
+			resetInputs.forEach((input) => {
+				expect(input).toHaveValue('');
+			});
+		});
+
+		it('clears results on reset', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit, reset }): JSX.Element => (
+						<>
+							<button data-testid="submit-btn" onClick={submit}>
+								Submit
+							</button>
+							<button data-testid="reset-btn" onClick={reset}>
+								Reset
+							</button>
+						</>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+			await expect(
+				screen.findByTestId('invite-success'),
+			).resolves.toBeInTheDocument();
+
+			await user.click(screen.getByTestId('reset-btn'));
+
+			expect(screen.queryByTestId('invite-success')).not.toBeInTheDocument();
+		});
+	});
+
+	describe('results cleared on edit', () => {
+		it('clears API error when email is edited', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			server.use(createErrorHandler('already_exists', 'User already exists'));
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+			await expect(
+				screen.findByTestId('invite-api-error'),
+			).resolves.toBeInTheDocument();
+
+			await user.type(emailInputs[0], 'x');
+
+			await waitFor(() => {
+				expect(screen.queryByTestId('invite-api-error')).not.toBeInTheDocument();
+			});
+		});
+
+		it('clears API error when role is changed', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			server.use(createErrorHandler('already_exists', 'User already exists'));
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+			await expect(
+				screen.findByTestId('invite-api-error'),
+			).resolves.toBeInTheDocument();
+
+			const viewerElements = screen.getAllByText('Viewer');
+			await user.click(viewerElements[0]);
+			const editorOptions = await screen.findAllByText('Editor');
+			await user.click(editorOptions[editorOptions.length - 1]);
+
+			await waitFor(() => {
+				expect(screen.queryByTestId('invite-api-error')).not.toBeInTheDocument();
+			});
+		});
+	});
+
+	describe('empty submission', () => {
+		it('does not submit when no rows are touched', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+			const onSuccess = jest.fn();
+
+			render(
+				<InviteMembers
+					onSuccess={onSuccess}
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			expect(onSuccess).not.toHaveBeenCalled();
+		});
+	});
+
+	describe('submitting state', () => {
+		it('disables submit while submitting', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit, isSubmitting }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit} disabled={isSubmitting}>
+							{isSubmitting ? 'Submitting...' : 'Submit'}
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			const submitBtn = screen.getByTestId('submit-btn');
+			await user.click(submitBtn);
+
+			await waitFor(() => {
+				expect(screen.queryByText('Submitting...')).not.toBeInTheDocument();
+			});
+		});
+	});
+
+	describe('whitespace handling', () => {
+		it('trims email whitespace before submission', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+			const calls: { email: string }[] = [];
+
+			server.use(
+				rest.post(CREATE_USER_ENDPOINT, async (req, res, ctx) => {
+					const body = await req.json();
+					calls.push(body);
+					return res(ctx.status(201), ctx.json({ data: { id: 'user-123' } }));
+				}),
+			);
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], '  alice@signoz.io  ');
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await waitFor(() => {
+				expect(calls).toHaveLength(1);
+				expect(calls[0].email).toBe('alice@signoz.io');
+			});
+		});
+	});
+});

frontend/src/components/InviteMembers/__tests__/InviteMembers.rendering.test.tsx

@@ -0,0 +1,95 @@
+import { server } from 'mocks-server/server';
+import { render, screen } from 'tests/test-utils';
+
+import InviteMembers from '../InviteMembers';
+
+import { createRolesHandler, createSuccessHandler } from './testUtils';
+
+describe('InviteMembers - Rendering', () => {
+	beforeEach(() => {
+		server.use(createRolesHandler(), createSuccessHandler());
+	});
+
+	afterEach(() => {
+		server.resetHandlers();
+	});
+
+	it('renders default initial row count of 3', () => {
+		render(<InviteMembers />);
+
+		const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+		expect(emailInputs).toHaveLength(3);
+	});
+
+	it('renders custom initial row count', () => {
+		render(<InviteMembers initialRowCount={5} />);
+
+		const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+		expect(emailInputs).toHaveLength(5);
+	});
+
+	it('renders header by default', () => {
+		render(<InviteMembers />);
+
+		expect(screen.getByText('Email address')).toBeInTheDocument();
+		expect(screen.getByText('Role')).toBeInTheDocument();
+	});
+
+	it('hides header when showHeader is false', () => {
+		render(<InviteMembers showHeader={false} />);
+
+		expect(screen.queryByText('Email address')).not.toBeInTheDocument();
+		expect(screen.queryByText('Role')).not.toBeInTheDocument();
+	});
+
+	it('renders add button by default', () => {
+		render(<InviteMembers />);
+
+		expect(
+			screen.getByRole('button', { name: /add another/i }),
+		).toBeInTheDocument();
+	});
+
+	it('hides add button when showAddButton is false', () => {
+		render(<InviteMembers showAddButton={false} />);
+
+		expect(
+			screen.queryByRole('button', { name: /add another/i }),
+		).not.toBeInTheDocument();
+	});
+
+	it('renders custom email placeholder', () => {
+		render(<InviteMembers emailPlaceholder="custom@placeholder.com" />);
+
+		const emailInputs = screen.getAllByPlaceholderText('custom@placeholder.com');
+		expect(emailInputs).toHaveLength(3);
+	});
+
+	it('applies custom className', () => {
+		const { container } = render(<InviteMembers className="custom-class" />);
+
+		expect(container.querySelector('.custom-class')).toBeInTheDocument();
+	});
+
+	it('renders footer via renderFooter prop', () => {
+		render(
+			<InviteMembers
+				renderFooter={({ canSubmit }): JSX.Element => (
+					<button data-testid="custom-footer" disabled={!canSubmit}>
+						Custom Submit
+					</button>
+				)}
+			/>,
+		);
+
+		expect(screen.getByTestId('custom-footer')).toBeInTheDocument();
+		expect(screen.getByTestId('custom-footer')).toBeDisabled();
+	});
+
+	it('renders role select for each row', () => {
+		render(<InviteMembers initialRowCount={2} />);
+
+		const roleSelects = screen.getAllByText('Select role');
+		expect(roleSelects).toHaveLength(2);
+	});
+});

frontend/src/components/InviteMembers/__tests__/InviteMembers.rowManagement.test.tsx

@@ -0,0 +1,95 @@
+import { server } from 'mocks-server/server';
+import { render, screen, userEvent } from 'tests/test-utils';
+
+import InviteMembers from '../InviteMembers';
+
+import { createRolesHandler, createSuccessHandler } from './testUtils';
+
+describe('InviteMembers - Row Management', () => {
+	beforeEach(() => {
+		server.use(createRolesHandler(), createSuccessHandler());
+	});
+
+	afterEach(() => {
+		server.resetHandlers();
+	});
+
+	it('adds a row when "Add another" is clicked', async () => {
+		const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+		render(<InviteMembers initialRowCount={2} />);
+
+		expect(screen.getAllByPlaceholderText('e.g. john@signoz.io')).toHaveLength(2);
+
+		await user.click(screen.getByRole('button', { name: /add another/i }));
+
+		expect(screen.getAllByPlaceholderText('e.g. john@signoz.io')).toHaveLength(3);
+	});
+
+	it('removes a row when trash button is clicked', async () => {
+		const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+		render(<InviteMembers initialRowCount={3} />);
+
+		const removeButtons = screen.getAllByRole('button', { name: /remove row/i });
+		expect(removeButtons).toHaveLength(3);
+
+		await user.click(removeButtons[0]);
+
+		expect(screen.getAllByPlaceholderText('e.g. john@signoz.io')).toHaveLength(2);
+	});
+
+	it('respects minRows constraint when removing rows', async () => {
+		const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+		render(<InviteMembers initialRowCount={2} minRows={2} />);
+
+		expect(screen.queryAllByRole('button', { name: /remove row/i })).toHaveLength(
+			0,
+		);
+
+		await user.click(screen.getByRole('button', { name: /add another/i }));
+
+		const removeButtons = screen.getAllByRole('button', { name: /remove row/i });
+		expect(removeButtons).toHaveLength(3);
+
+		await user.click(removeButtons[0]);
+
+		expect(screen.getAllByPlaceholderText('e.g. john@signoz.io')).toHaveLength(2);
+		expect(screen.queryAllByRole('button', { name: /remove row/i })).toHaveLength(
+			0,
+		);
+	});
+
+	it('cannot remove rows below minRows=1 default', async () => {
+		const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+		render(<InviteMembers initialRowCount={2} />);
+
+		const removeButtons = screen.getAllByRole('button', { name: /remove row/i });
+		await user.click(removeButtons[0]);
+
+		expect(screen.getAllByPlaceholderText('e.g. john@signoz.io')).toHaveLength(1);
+		expect(screen.queryAllByRole('button', { name: /remove row/i })).toHaveLength(
+			0,
+		);
+	});
+
+	it('preserves data in other rows when removing one', async () => {
+		const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+		render(<InviteMembers initialRowCount={3} />);
+
+		const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+		await user.type(emailInputs[0], 'first@signoz.io');
+		await user.type(emailInputs[2], 'third@signoz.io');
+
+		const removeButtons = screen.getAllByRole('button', { name: /remove row/i });
+		await user.click(removeButtons[1]);
+
+		const remainingInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+		expect(remainingInputs).toHaveLength(2);
+		expect(remainingInputs[0]).toHaveValue('first@signoz.io');
+		expect(remainingInputs[1]).toHaveValue('third@signoz.io');
+	});
+});

frontend/src/components/InviteMembers/__tests__/InviteMembers.submission.test.tsx

@@ -0,0 +1,362 @@
+import { rest, server } from 'mocks-server/server';
+import { render, screen, userEvent, waitFor } from 'tests/test-utils';
+
+import InviteMembers from '../InviteMembers';
+
+import {
+	CREATE_USER_ENDPOINT,
+	createErrorHandler,
+	createRolesHandler,
+	createSuccessHandler,
+	createTrackingHandler,
+	VALID_EMAIL,
+} from './testUtils';
+
+describe('InviteMembers - Submission', () => {
+	beforeEach(() => {
+		server.use(createRolesHandler(), createSuccessHandler());
+	});
+
+	afterEach(() => {
+		server.resetHandlers();
+	});
+
+	describe('API calls', () => {
+		it('calls createUser API for each touched row', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+			const { handler, calls } = createTrackingHandler();
+			server.use(handler);
+
+			render(
+				<InviteMembers
+					initialRowCount={3}
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], 'alice@signoz.io');
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await waitFor(() => {
+				expect(calls).toHaveLength(1);
+				expect(calls[0]).toMatchObject({
+					email: 'alice@signoz.io',
+					userRoles: [{ id: 'role-viewer' }],
+				});
+			});
+		});
+
+		it('calls createUser API for multiple touched rows', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+			const { handler, calls } = createTrackingHandler();
+			server.use(handler);
+
+			render(
+				<InviteMembers
+					initialRowCount={3}
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+
+			await user.type(emailInputs[0], 'alice@signoz.io');
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.type(emailInputs[1], 'bob@signoz.io');
+			await user.click(screen.getAllByText('Select role')[0]);
+			const editorOptions = await screen.findAllByText('Editor');
+			await user.click(editorOptions[editorOptions.length - 1]);
+
+			await user.type(emailInputs[2], 'charlie@signoz.io');
+			await user.click(screen.getAllByText('Select role')[0]);
+			const adminOptions = await screen.findAllByText('Admin');
+			await user.click(adminOptions[adminOptions.length - 1]);
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await waitFor(() => {
+				expect(calls).toHaveLength(3);
+			});
+
+			expect(calls[0]).toMatchObject({
+				email: 'alice@signoz.io',
+				userRoles: [{ id: 'role-viewer' }],
+			});
+			expect(calls[1]).toMatchObject({
+				email: 'bob@signoz.io',
+				userRoles: [{ id: 'role-editor' }],
+			});
+			expect(calls[2]).toMatchObject({
+				email: 'charlie@signoz.io',
+				userRoles: [{ id: 'role-admin' }],
+			});
+		});
+	});
+
+	describe('callbacks', () => {
+		it('calls onSuccess when all invites succeed', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+			const onSuccess = jest.fn();
+
+			render(
+				<InviteMembers
+					onSuccess={onSuccess}
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await waitFor(() => {
+				expect(onSuccess).toHaveBeenCalled();
+			});
+		});
+
+		it('calls onAllFailed when all invites fail', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+			const onAllFailed = jest.fn();
+
+			server.use(createErrorHandler('already_exists', 'User already exists'));
+
+			render(
+				<InviteMembers
+					onAllFailed={onAllFailed}
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await waitFor(() => {
+				expect(onAllFailed).toHaveBeenCalledWith(
+					expect.arrayContaining([
+						expect.objectContaining({
+							email: VALID_EMAIL,
+							success: false,
+						}),
+					]),
+				);
+			});
+		});
+
+		it('calls onPartialSuccess when some invites succeed and some fail', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+			const onPartialSuccess = jest.fn();
+			const onSuccess = jest.fn();
+			const onAllFailed = jest.fn();
+			const apiCalls: string[] = [];
+			let callCount = 0;
+
+			server.use(
+				createRolesHandler(),
+				rest.post(CREATE_USER_ENDPOINT, async (req, res, ctx) => {
+					const body = await req.json();
+					apiCalls.push(body.email);
+					callCount++;
+					if (callCount === 1) {
+						return res(ctx.status(201), ctx.json({ data: { id: 'user-123' } }));
+					}
+					return res(
+						ctx.status(409),
+						ctx.json({
+							error: {
+								code: 'already_exists',
+								message: 'User already exists',
+							},
+						}),
+					);
+				}),
+			);
+
+			render(
+				<InviteMembers
+					initialRowCount={2}
+					onSuccess={onSuccess}
+					onPartialSuccess={onPartialSuccess}
+					onAllFailed={onAllFailed}
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+
+			await user.type(emailInputs[0], 'alice@signoz.io');
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.type(emailInputs[1], 'bob@signoz.io');
+			await user.click(screen.getAllByText('Select role')[0]);
+			const editorOptions = await screen.findAllByText('Editor');
+			await user.click(editorOptions[editorOptions.length - 1]);
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await waitFor(() => {
+				expect(apiCalls).toHaveLength(2);
+			});
+
+			expect(apiCalls).toStrictEqual(['alice@signoz.io', 'bob@signoz.io']);
+			expect(onSuccess).not.toHaveBeenCalled();
+			expect(onAllFailed).not.toHaveBeenCalled();
+			expect(onPartialSuccess).toHaveBeenCalledWith(
+				expect.arrayContaining([
+					expect.objectContaining({ email: 'alice@signoz.io', success: true }),
+					expect.objectContaining({
+						email: 'bob@signoz.io',
+						success: false,
+						error: 'User already exists',
+					}),
+				]),
+			);
+
+			await expect(
+				screen.findByTestId('invite-api-error'),
+			).resolves.toBeInTheDocument();
+			expect(
+				screen.getByText('1 invite(s) sent successfully.'),
+			).toBeInTheDocument();
+			expect(screen.getByText('1 invite(s) failed:')).toBeInTheDocument();
+			expect(
+				screen.getByText('bob@signoz.io: User already exists'),
+			).toBeInTheDocument();
+		});
+	});
+
+	describe('result display', () => {
+		it('shows success callout when all invites succeed', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await expect(
+				screen.findByTestId('invite-success'),
+			).resolves.toBeInTheDocument();
+		});
+
+		it('shows error callout with failed emails when API fails', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			server.use(createErrorHandler('already_exists', 'User already exists'));
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await expect(
+				screen.findByTestId('invite-api-error'),
+			).resolves.toBeInTheDocument();
+			expect(screen.getByText(/1 invite\(s\) failed/)).toBeInTheDocument();
+		});
+	});
+
+	describe('footer props', () => {
+		it('provides correct canSubmit state', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					renderFooter={({ canSubmit }): JSX.Element => (
+						<button data-testid="submit-btn" disabled={!canSubmit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			expect(screen.getByTestId('submit-btn')).toBeDisabled();
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+
+			expect(screen.getByTestId('submit-btn')).not.toBeDisabled();
+		});
+
+		it('provides touchedCount', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					initialRowCount={3}
+					renderFooter={({ touchedCount }): JSX.Element => (
+						<span data-testid="touched-count">{touchedCount}</span>
+					)}
+				/>,
+			);
+
+			expect(screen.getByTestId('touched-count')).toHaveTextContent('0');
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], 'a@b.com');
+
+			expect(screen.getByTestId('touched-count')).toHaveTextContent('1');
+
+			await user.type(emailInputs[1], 'c@d.com');
+
+			expect(screen.getByTestId('touched-count')).toHaveTextContent('2');
+		});
+	});
+});

frontend/src/components/InviteMembers/__tests__/InviteMembers.validation.test.tsx

@@ -0,0 +1,217 @@
+import { server } from 'mocks-server/server';
+import { render, screen, userEvent, waitFor } from 'tests/test-utils';
+
+import InviteMembers from '../InviteMembers';
+
+import {
+	createRolesHandler,
+	createSuccessHandler,
+	INVALID_EMAIL,
+	VALID_EMAIL,
+} from './testUtils';
+
+describe('InviteMembers - Validation', () => {
+	beforeEach(() => {
+		server.use(createRolesHandler(), createSuccessHandler());
+	});
+
+	afterEach(() => {
+		server.resetHandlers();
+	});
+
+	describe('email validation', () => {
+		it('shows email validation error when email is invalid and role is selected', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], INVALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await expect(
+				screen.findByText('Please enter valid emails for team members'),
+			).resolves.toBeInTheDocument();
+		});
+
+		it('shows inline error for invalid email field', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], INVALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await expect(
+				screen.findByText('Invalid email address'),
+			).resolves.toBeInTheDocument();
+		});
+
+		it('clears validation error when email is corrected', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], INVALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await expect(
+				screen.findByText('Please enter valid emails for team members'),
+			).resolves.toBeInTheDocument();
+
+			await user.clear(emailInputs[0]);
+			await user.type(emailInputs[0], VALID_EMAIL);
+
+			await waitFor(() => {
+				expect(
+					screen.queryByText('Please enter valid emails for team members'),
+				).not.toBeInTheDocument();
+			});
+		});
+	});
+
+	describe('role validation', () => {
+		it('shows role validation error when role is missing', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await expect(
+				screen.findByText('Please select roles for team members'),
+			).resolves.toBeInTheDocument();
+		});
+
+		it('clears role validation error when role is selected', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await expect(
+				screen.findByText('Please select roles for team members'),
+			).resolves.toBeInTheDocument();
+
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await waitFor(() => {
+				expect(
+					screen.queryByText('Please select roles for team members'),
+				).not.toBeInTheDocument();
+			});
+		});
+	});
+
+	describe('combined validation', () => {
+		it('shows combined error when both email and role are invalid', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], INVALID_EMAIL);
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			await expect(
+				screen.findByText(
+					'Please enter valid emails and select roles for team members',
+				),
+			).resolves.toBeInTheDocument();
+		});
+	});
+
+	describe('touched rows', () => {
+		it('only validates touched rows (rows with email or role)', async () => {
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(
+				<InviteMembers
+					initialRowCount={3}
+					renderFooter={({ submit }): JSX.Element => (
+						<button data-testid="submit-btn" onClick={submit}>
+							Submit
+						</button>
+					)}
+				/>,
+			);
+
+			const emailInputs = screen.getAllByPlaceholderText('e.g. john@signoz.io');
+			await user.type(emailInputs[0], VALID_EMAIL);
+			await user.click(screen.getAllByText('Select role')[0]);
+			await user.click(await screen.findByText('Viewer'));
+
+			await user.click(screen.getByTestId('submit-btn'));
+
+			expect(
+				screen.queryByTestId('invite-validation-error'),
+			).not.toBeInTheDocument();
+		});
+	});
+});

frontend/src/components/InviteMembers/__tests__/testUtils.ts

@@ -0,0 +1,54 @@
+import { RestHandler } from 'msw';
+import { rest } from 'mocks-server/server';
+
+export const CREATE_USER_ENDPOINT = '*/api/v2/users';
+export const LIST_ROLES_ENDPOINT = '*/api/v1/roles';
+
+export const MOCK_ROLES = [
+	{ id: 'role-admin', name: 'Admin', description: 'Admin role' },
+	{ id: 'role-editor', name: 'Editor', description: 'Editor role' },
+	{ id: 'role-viewer', name: 'Viewer', description: 'Viewer role' },
+];
+
+export const VALID_EMAIL = 'alice@signoz.io';
+export const INVALID_EMAIL = 'not-an-email';
+
+export function createSuccessHandler(): RestHandler {
+	return rest.post(CREATE_USER_ENDPOINT, (_, res, ctx) =>
+		res(ctx.status(201), ctx.json({ data: { id: 'user-123' } })),
+	);
+}
+
+export function createErrorHandler(
+	code: string,
+	message: string,
+	status = 409,
+): RestHandler {
+	return rest.post(CREATE_USER_ENDPOINT, (_, res, ctx) =>
+		res(
+			ctx.status(status),
+			ctx.json({
+				errors: [{ code, msg: message }],
+			}),
+		),
+	);
+}
+
+export function createRolesHandler(): RestHandler {
+	return rest.get(LIST_ROLES_ENDPOINT, (_, res, ctx) =>
+		res(ctx.status(200), ctx.json({ data: MOCK_ROLES })),
+	);
+}
+
+export function createTrackingHandler(): {
+	handler: RestHandler;
+	calls: unknown[];
+} {
+	const calls: unknown[] = [];
+	const handler = rest.post(CREATE_USER_ENDPOINT, async (req, res, ctx) => {
+		const body = await req.json();
+		calls.push(body);
+		return res(ctx.status(201), ctx.json({ data: { id: 'user-123' } }));
+	});
+	return { handler, calls };
+}

frontend/src/components/InviteMembers/types.ts

@@ -0,0 +1,64 @@
+import { ReactNode } from 'react';
+
+export interface InviteMemberRow {
+	id: string;
+	email: string;
+	roleId: string;
+}
+
+export interface InviteResult {
+	email: string;
+	success: boolean;
+	error?: string;
+}
+
+export interface FooterRenderProps {
+	submit: () => Promise<InviteResult[]>;
+	reset: () => void;
+	canSubmit: boolean;
+	isSubmitting: boolean;
+	touchedCount: number;
+}
+
+export interface UseInviteMembersOptions {
+	initialRowCount?: number;
+	onSuccess?: () => void;
+	onPartialSuccess?: (results: InviteResult[]) => void;
+	onAllFailed?: (results: InviteResult[]) => void;
+}
+
+export interface UseInviteMembersReturn {
+	rows: InviteMemberRow[];
+	emailValidity: Record<string, boolean>;
+	hasInvalidEmails: boolean;
+	hasInvalidRoles: boolean;
+	isSubmitting: boolean;
+	inviteResults: InviteResult[] | null;
+
+	addRow: () => void;
+	removeRow: (id: string) => void;
+	updateEmail: (id: string, email: string) => void;
+	updateRole: (id: string, roleId: string | undefined) => void;
+	reset: () => void;
+	submit: () => Promise<InviteResult[]>;
+
+	touchedRows: InviteMemberRow[];
+	failedResults: InviteResult[];
+	successResults: InviteResult[];
+	canSubmit: boolean;
+}
+
+export interface InviteMembersProps {
+	className?: string;
+	initialRowCount?: number;
+	minRows?: number;
+	emailPlaceholder?: string;
+	showHeader?: boolean;
+	showAddButton?: boolean;
+
+	onSuccess?: () => void;
+	onPartialSuccess?: (results: InviteResult[]) => void;
+	onAllFailed?: (results: InviteResult[]) => void;
+
+	renderFooter?: (props: FooterRenderProps) => ReactNode;
+}

frontend/src/components/InviteMembers/useInviteMembers.ts

@@ -0,0 +1,245 @@
+import { useCallback, useMemo, useState } from 'react';
+import { AxiosError } from 'axios';
+import { convertToApiError } from 'api/ErrorResponseHandlerForGeneratedAPIs';
+import { RenderErrorResponseDTO } from 'api/generated/services/sigNoz.schemas';
+import { createUser } from 'api/generated/services/users';
+import { cloneDeep, debounce } from 'lodash-es';
+import { EMAIL_REGEX } from 'utils/app';
+import { getBaseUrl } from 'utils/basePath';
+import { v4 as uuid } from 'uuid';
+
+import {
+	InviteMemberRow,
+	InviteResult,
+	UseInviteMembersOptions,
+	UseInviteMembersReturn,
+} from './types';
+
+const createEmptyRow = (): InviteMemberRow => ({
+	id: uuid(),
+	email: '',
+	roleId: '',
+});
+
+const isRowTouched = (row: InviteMemberRow): boolean =>
+	row.email.trim() !== '' || row.roleId !== '';
+
+export function useInviteMembers(
+	options: UseInviteMembersOptions = {},
+): UseInviteMembersReturn {
+	const {
+		initialRowCount = 3,
+		onSuccess,
+		onPartialSuccess,
+		onAllFailed,
+	} = options;
+
+	const [rows, setRows] = useState<InviteMemberRow[]>(() =>
+		Array.from({ length: initialRowCount }, () => createEmptyRow()),
+	);
+	const [emailValidity, setEmailValidity] = useState<Record<string, boolean>>(
+		{},
+	);
+	const [hasInvalidEmails, setHasInvalidEmails] = useState(false);
+	const [hasInvalidRoles, setHasInvalidRoles] = useState(false);
+	const [isSubmitting, setIsSubmitting] = useState(false);
+	const [inviteResults, setInviteResults] = useState<InviteResult[] | null>(
+		null,
+	);
+
+	const touchedRows = useMemo(() => rows.filter(isRowTouched), [rows]);
+
+	const failedResults = useMemo(
+		() => inviteResults?.filter((r) => !r.success) ?? [],
+		[inviteResults],
+	);
+
+	const successResults = useMemo(
+		() => inviteResults?.filter((r) => r.success) ?? [],
+		[inviteResults],
+	);
+
+	const debouncedValidateEmail = useMemo(
+		() =>
+			debounce((email: string, rowId: string) => {
+				const isValid = EMAIL_REGEX.test(email);
+				setEmailValidity((prev) => ({ ...prev, [rowId]: isValid }));
+			}, 500),
+		[],
+	);
+
+	const validateAllRows = useCallback((): boolean => {
+		let isValid = true;
+		let hasEmailErrors = false;
+		let hasRoleErrors = false;
+		const updatedEmailValidity: Record<string, boolean> = {};
+
+		const touched = rows.filter(isRowTouched);
+
+		touched.forEach((row) => {
+			const emailValid = EMAIL_REGEX.test(row.email);
+			const roleValid = row.roleId !== '';
+
+			if (!emailValid || !row.email) {
+				isValid = false;
+				hasEmailErrors = true;
+			}
+			if (!roleValid) {
+				isValid = false;
+				hasRoleErrors = true;
+			}
+
+			updatedEmailValidity[row.id] = emailValid;
+		});
+
+		setEmailValidity(updatedEmailValidity);
+		setHasInvalidEmails(hasEmailErrors);
+		setHasInvalidRoles(hasRoleErrors);
+
+		return isValid;
+	}, [rows]);
+
+	const addRow = useCallback((): void => {
+		setRows((prev) => [...prev, createEmptyRow()]);
+	}, []);
+
+	const removeRow = useCallback((id: string): void => {
+		setRows((prev) => prev.filter((r) => r.id !== id));
+		setEmailValidity((prev) => {
+			const updated = { ...prev };
+			delete updated[id];
+			return updated;
+		});
+	}, []);
+
+	const updateEmail = useCallback(
+		(id: string, email: string): void => {
+			setRows((prev) => {
+				const updated = cloneDeep(prev);
+				const row = updated.find((r) => r.id === id);
+				if (row) {
+					row.email = email;
+				}
+				return updated;
+			});
+
+			if (hasInvalidEmails) {
+				setHasInvalidEmails(false);
+			}
+			if (emailValidity[id] === false) {
+				setEmailValidity((prev) => ({ ...prev, [id]: true }));
+			}
+			if (inviteResults) {
+				setInviteResults(null);
+			}
+
+			debouncedValidateEmail(email, id);
+		},
+		[hasInvalidEmails, emailValidity, inviteResults, debouncedValidateEmail],
+	);
+
+	const updateRole = useCallback(
+		(id: string, roleId: string | undefined): void => {
+			setRows((prev) => {
+				const updated = cloneDeep(prev);
+				const row = updated.find((r) => r.id === id);
+				if (row) {
+					row.roleId = roleId ?? '';
+				}
+				return updated;
+			});
+
+			if (hasInvalidRoles) {
+				setHasInvalidRoles(false);
+			}
+			if (inviteResults) {
+				setInviteResults(null);
+			}
+		},
+		[hasInvalidRoles, inviteResults],
+	);
+
+	const reset = useCallback((): void => {
+		setRows(Array.from({ length: initialRowCount }, () => createEmptyRow()));
+		setEmailValidity({});
+		setHasInvalidEmails(false);
+		setHasInvalidRoles(false);
+		setInviteResults(null);
+	}, [initialRowCount]);
+
+	const submit = useCallback(async (): Promise<InviteResult[]> => {
+		if (!validateAllRows()) {
+			return [];
+		}
+
+		const touched = rows.filter(isRowTouched);
+		if (touched.length === 0) {
+			return [];
+		}
+
+		setIsSubmitting(true);
+		setInviteResults(null);
+
+		const results: InviteResult[] = [];
+
+		for (const row of touched) {
+			try {
+				await createUser({
+					email: row.email.trim(),
+					frontendBaseUrl: getBaseUrl(),
+					userRoles: [{ id: row.roleId }],
+				});
+				results.push({ email: row.email, success: true });
+			} catch (err) {
+				const apiErr = convertToApiError(err as AxiosError<RenderErrorResponseDTO>);
+				results.push({
+					email: row.email,
+					success: false,
+					error: apiErr?.getErrorMessage() ?? 'Unknown error',
+				});
+			}
+		}
+
+		setInviteResults(results);
+		setIsSubmitting(false);
+
+		const failures = results.filter((r) => !r.success);
+		const successes = results.filter((r) => r.success);
+
+		if (failures.length === 0) {
+			onSuccess?.();
+		} else if (successes.length > 0) {
+			onPartialSuccess?.(results);
+		} else {
+			onAllFailed?.(results);
+		}
+
+		return results;
+	}, [validateAllRows, rows, onSuccess, onPartialSuccess, onAllFailed]);
+
+	const canSubmit = useMemo(
+		() => !isSubmitting && touchedRows.length > 0,
+		[isSubmitting, touchedRows.length],
+	);
+
+	return {
+		rows,
+		emailValidity,
+		hasInvalidEmails,
+		hasInvalidRoles,
+		isSubmitting,
+		inviteResults,
+
+		addRow,
+		removeRow,
+		updateEmail,
+		updateRole,
+		reset,
+		submit,
+
+		touchedRows,
+		failedResults,
+		successResults,
+		canSubmit,
+	};
+}

frontend/src/mocks-server/handlers.ts

@@ -176,6 +176,15 @@ export const handlers = [
 		res(ctx.status(200), ctx.json(getDashboardById)),
 	),
 
+	rest.post('http://localhost/api/v2/users', (_, res, ctx) =>
+		res(
+			ctx.status(201),
+			ctx.json({
+				data: { id: 'user-123' },
+			}),
+		),
+	),
+
 	rest.post('http://localhost/api/v1/invite', (_, res, ctx) =>
 		res(
 			ctx.status(200),