[benmxrt]

You're right that the current beta uses Guerrilla Mail as the upstream provider for mail delivery. My 'Zero-Persistence' and 'No-Cookie' claims specifically apply to the Mephisto layer: we don't store your data in our own DB, we don't use tracking cookies, and we purge all session metadata from our RAM.

Regarding polling vs WebSockets: The frontend currently polls the Mephisto proxy to ensure maximum compatibility with strict corporate firewalls, but a native WebSocket implementation for our own mail-server node is the long-term goal. I’m being transparent about the proxying—Mephisto is designed as a privacy-hardened 'frontend wrapper' that adds an extra layer of anonymity between you and the upstream providers.