/**
 * Email Auto-Discovery — find IMAP/SMTP settings from just an email address.
 *
 * Strategy (in order):
 * 1. Well-known providers (Gmail, Outlook, Yahoo, iCloud, etc.)
 * 2. Mozilla ISPDB (Thunderbird autoconfig database, 30K+ providers)
 * 3. Common hostname patterns (mail.domain, imap.domain, smtp.domain)
 *
 * KMU-friendly: User enters email + password → we find everything else.
 */
export interface DiscoveredSettings {
    provider: 'gmail' | 'outlook' | 'imap';
    imap: {
        host: string;
        port: number;
        tls: boolean;
    };
    smtp: {
        host: string;
        port: number;
        tls: boolean;
    };
    displayName: string;
    requiresOAuth: boolean;
    oauthNote?: string;
}
export declare function discoverEmailSettings(email: string): Promise<{
    found: boolean;
    settings?: DiscoveredSettings;
    method?: 'well-known' | 'ispdb' | 'mx-heuristic' | 'common-pattern';
    suggestions?: string[];
}>;
/**
 * Format discovery result as human-readable text for suite_setup response.
 */
export declare function formatDiscoveryResult(email: string, result: Awaited<ReturnType<typeof discoverEmailSettings>>): string;
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