Custom authentication
Learn how to implement a custom authentication flow to connect accounts directly inside your application. Available for LinkedIn, WhatsApp, Instagram, Messenger, Telegram, X (Twitter), and IMAP.
If you want to embed a custom authentication wizard or form inside your product, postpress exposes API endpoints that let you implement every authentication step and edge case yourself. This approach gives you the freedom to build a tailored connect experience that matches your application's look and flow.
Most teams ship the hosted auth wizard first and only move to custom authentication when they need full UI control or an embedded mobile flow.
Provider guides
Follow the quickstart guide for each provider to learn how to implement the supported authentication scenarios, including QR code scanning, credentials, 2FA, and one-time passwords.
Updated May 2026