/**
 * Email webmail SSO, sieve, SSO plugin (Wave W1).
 * Extracted from email-webmail.ts. Behaviour preserved.
 */
import type { IncomingMessage, ServerResponse } from 'node:http';
import type { AppContext } from '../app-context.js';
export declare function handleEmailWebmailSsoRoutes(ctx: AppContext, req: IncomingMessage, res: ServerResponse, url: URL, method: string): Promise<boolean>;
//# sourceMappingURL=email-webmail-sso.d.ts.map