Apps

Your mailboxes, with optional OpenPGP protection.
Envelox 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 Envelox Mail to compose a message.

Works with OpenPGP-compatible keys.

Why Envelox

• 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. New installs open mail as plain text (HTML remains available); older saves without that choice keep HTML. Remote images stay blocked until confirmed. Subjects and routing headers are not PGP-encrypted.