Your mailboxes, with optional OpenPGP protection.
Brieflox is an IMAP/SMTP mail client for iPhone. Read and send regular mail, or sign and encrypt messages and attachments. Share text, links and files to Brieflox Mail to compose a message.

Works with OpenPGP-compatible keys.

Why Brieflox

  • Multiple mailboxes: Unified inbox and separate server folders, identities and credentials.
  • Plain or protected mail: Choose PGP signing, encryption, both or neither per message.
  • Sign + verify: PGP/MIME signatures, fingerprint display and separate key trust status.
  • keys.openpgp.org integration: Search for keys by email/ID and upload your own for easy discovery.
  • Algorithm choice: Generate new keys with RSA or modern ECC (Curve25519).
  • Share Extension: Compose mail from text, links, images and files shared by other apps.
  • Key management: Import, rename, delete, export, and set active keys.
  • Biometric protection: Private keys and passphrases are protected by Face ID/Touch ID.
  • Protected storage: Passwords in Keychain; encrypted local drafts and mail cache.
  • Localized: New mail screens in English and Dutch; existing PGP translations remain available.

Get started

Add an account in Settings → Mail Accounts using your provider’s IMAP and SMTP settings and password or app-specific password. For PGP, import or generate keys in PGP Keys and select the account’s private key in account settings.

Current account support uses password/app-password authentication with TLS. Foreground sync and optional background refresh are available; provider OAuth sign-in, background push and server-synchronized drafts are not. Mail opens as restricted HTML by default without remote images. Subjects and routing headers are not PGP-encrypted.

Made with love in Holland. Brieflox is an independent mail app with OpenPGP.