PGPMailer

PGPMailer is a secure-first Android mail client with a familiar inbox flow, modern Compose UI, and inline OpenPGP support for encrypted communication.

Features

- Guided onboarding with provider presets, auto-detect, and IMAP/SMTP diagnostics - Mailbox with folders, search, filters, pull-to-refresh, threaded previews, pagination, and quick actions (read/unread/delete) - Compose with plaintext, sign, and encrypt modes (inline OpenPGP) - Recipient key lookup from local key store and public key directories - Key manager with generate, import (.asc), trust, verify, publish (keys.openpgp.org), and overwrite handling - Reply flow from message details - Secure in-app decryption for encrypted messages and encrypted attachments - In-app secure PDF preview, encrypted/decrypted download options, and controlled share actions - Draft autosave and encrypted backup import/export (including restore during setup) - Local Web Companion (beta): browser mailbox access over local network with QR login, PIN-gated secure actions, and HTTPS mode with HTTP compatibility fallback

Security

- Sensitive local data uses encrypted storage on device - PIN protection is required; biometric can be enabled for secure actions - App lock after background timeout for session hardening - Screenshot/screen-record protection on app screens - Decrypted temp preview/share files are cleaned up automatically after secure preview/share flows - Crash recovery and diagnostics export with redaction for secrets - Web Companion secure actions require app PIN in browser flow