Features

mail combines a webmail interface with a background worker for synchronization, delivery, automation, and notifications. Each feature page explains what the feature does and lists only the Settings fields or environment variables that affect it.

Mail

Feature	What it covers
Mail accounts	IMAP synchronization, SMTP delivery, multiple accounts, and connection testing.
Reading and organizing	Message and thread views, attachments, bulk actions, notes, snooze, stars, and pins.
Mailboxes	Folder visibility and order, the default mailbox, and composed mailboxes.
Composing and sending	Rich-text composition, drafts, scheduling, undo send, sender selection, and attachments.
Search	Structured search, natural-language AI search, contact suggestions, and saved searches.
Contacts and groups	Address-book management, CSV transfer, mail-history import, and group recipients.
Signatures	Reusable HTML signatures and default signature selection.
Message templates	Reusable full-message and snippet content in the composer.

Security and sharing

Feature	What it covers
Authentication	Passwords, passkeys, GitHub, Discord, OIDC, sessions, and the single-owner model.
Privacy controls	Remote-content blocking, trusted senders, link warnings, and attachment warnings.
Mail authentication	SPF, DKIM, and DMARC results reported by trusted receiving services.
OpenPGP	Key management, signing, encryption, verification, and decryption.
Public sharing	Revocable public links for individual messages and threads.
Read tracking	Outgoing tracking pixels, read status, and read push notifications.

Automation

Feature	What it covers
AI features	Compose assistance, summaries, actions, translation, search, and importance classification.
Filters	Ordered rules for incoming and existing messages, previews, and JSON transfer.
Sender rules	Sender blocklists and allowlists applied during synchronization.
Auto-cleanup	Scheduled archival of old messages with dry-run previews.
Push notifications	Per-device push, per-mailbox controls, quiet hours, and read controls.

App and administration

Feature	What it covers
Interface	Color mode, themes, list density, card view, thread defaults, and keyboard shortcuts.
PWA and offline access	Installation, mailto handling, share targets, and local read caches.
Settings backup	Selective JSON export and restore of non-secret application settings.
Operations dashboard	Worker health, sync progress, queue telemetry, retries, and resynchronization.
Audit log	Redacted security and administrative event history.
Public IMAP proxy	Optional worker-hosted TCP access to a configured IMAP server.
Demo mode	In-memory sample data without PostgreSQL, authentication, or mail services.
External API and MCP	API keys, REST endpoints, and MCP transports.

Configuration notation

Feature pages use a path such as Settings > Notifications > Quiet hours for values stored through the application. Environment variable names are shown in uppercase code. When both are available, the saved Settings value takes precedence unless the page says otherwise.

See Configuration for installation-wide process settings and precedence.