iPGMail

iPGMail is a complete OpenPGP client for iPhone and iPad. Encrypt, decrypt, and digitally sign email and files using the same RFC 9580 / RFC 4880 standard you already use with GnuPG, Mailvelope, Thunderbird, ProtonMail's PGP exports, and any other OpenPGP-compatible tool.

Bring your existing PGP identity to iOS or generate a new one in the app. Your private keys are stored in the iOS Keychain with the highest data-protection class and are unlocked only by Touch ID or Face ID. All cryptography runs locally — your keys and message content never leave your device.

CRYPTO & INTEROPERABILITY
• OpenPGP v4 and v6 (RFC 9580 / RFC 4880, RFC 6637) — fully interoperable with GnuPG, Mailvelope, Thunderbird, ProtonMail PGP exports, and any other compliant tool
• Public-key algorithms: RSA, DSA, ECDSA, EdDSA (Ed25519, Ed448), ECDH (Curve25519, X448)
• Symmetric ciphers including AES-256, with modern AEAD encryption on PGP v6 (SEIPDv2) messages
• PGP/MIME for encrypted email; standard ASCII-armored output for any plain-text channel
• Detached and inline signatures; sign-only mode for authenticated but readable messages
• Symmetric (password-based) file encryption
• Encrypt to multiple recipients in a single message

EMAIL
• Send encrypted email directly from the app via SMTP — works with iCloud, Gmail, Outlook / Hotmail, Yahoo, AOL, Fastmail, GMX, Yandex, mail.ru, QQ, Comcast, and any custom SMTP server
• Google OAuth2 for password-free Gmail authentication
• Reply with quoted plaintext ("> " prefix) so encrypted threads read like normal email
• Or hand off to your default mail app via the standard iOS share sheet

KEY MANAGEMENT
• Generate new keypairs in-app with strong defaults (Curve25519, Curve448, or RSA)
• Import existing public and private keys (ASCII-armored or binary)
• Search SKS / hkps key servers and Keybase to find recipient keys
• Attach your public key to outgoing messages so recipients can import it directly
• Inspect key flags, expiration, signatures, and user IDs

FILES
• Encrypt and decrypt files up to 100 MB per file (200 MB total per message), with on-screen progress
• Quick Look preview of decrypted content in-place
• Receive encrypted attachments directly from iOS Mail.app — no copy/paste required
• Read .pgp, .gpg, .asc, and .sig files from anywhere via the Files app, AirDrop, iCloud Drive, Dropbox, or the system clipboard
• Open URL handler for the x-ipgmail:// scheme so other apps can hand work to iPGMail

iPAD-OPTIMIZED
• Sidebar navigation and full keyboard shortcut support
• Optimized layouts for Split View and Stage Manager

PRIVACY POSTURE
• Private keys are stored in the iOS Keychain and unlocked only by Touch ID / Face ID
• All encryption, decryption, signing, and verification happens on-device
• No account creation, no cloud middleman, no third-party access to your message content
• Open standard — your keys and messages stay portable to any other OpenPGP tool, on any platform

WHO IT'S FOR
Built for journalists, activists, security professionals, lawyers, developers, and anyone who already uses PGP on the desktop and wants the same workflow on iOS. Bring your existing key, decrypt your inbox, sign and send — without surrendering custody of your keys to anyone.

- Fixed memory footprint on large encrypt and decrypt actions that limited the size of the files that could be processed. Encrypting and Decrypting larger files (100Mb) should now be possible depending on the memory (RAM, not storage) available on your device.
- UI improvements to show an overlay view to show when activities are processing in the background (long encrypt/decrypt operations).