pl_mail

A self-hosted, Gmail-style mail client built with Symfony. Clone the repo, run docker compose up, and you get a working mail client with real-time push updates, threaded conversations, compose-and-send, and multi-account support across standard IMAP and Gmail (OAuth2) accounts.

Features

• Multi-account, multi-provider — standard IMAP (password) and Gmail (OAuth2 + Gmail API) accounts side by side, each with independent sync
• Compose & send — new messages, reply, reply-all and forward; Gmail is sent through the Gmail API (Sent copy auto-filed, no SMTP needed)
• Threaded conversations — messages grouped by References/In-Reply-To headers, with normalized-subject fallback
• Real-time updates — new mail appears instantly via IMAP IDLE + Mercure push and Gmail push watches (Cloud Pub/Sub), no refresh needed
• Contacts — addresses harvested implicitly from synced mail, with autocomplete in the compose address fields
• Gmail-style UI — checkbox select, star, sender, subject + snippet, date, hover actions per row
• Single-pane navigation — clicking a thread loads it in-place via fetch + History API, back button works correctly
• Turbo modal system — add-account and other forms open in a modal without a full page load
• Dark mode — respects system preference, toggleable, persisted
• Async sync — Symfony Messenger with Doctrine transport; Gmail fetched via the Batch API to stay within quota; memory-safe batching
• Supervised IDLE workers — one IMAP IDLE process per enabled mailbox, watched and auto-restarted by a built-in supervisor command
• Encrypted credentials at rest — account passwords and OAuth tokens encrypted with a libsodium secretbox key
• Attachments & inline images — lazy Gmail attachment materialization; cid: inline images rewritten for display

Stack

Layer	Technology
Backend	Symfony 8, Doctrine ORM, PHP 8.4+
Database	PostgreSQL 18
IMAP	webklex/php-imap
Gmail	Gmail REST + Batch API, OAuth2 (league/oauth2-client)
Async	Symfony Messenger, Doctrine transport
Push	Mercure hub, Gmail Cloud Pub/Sub watch
Frontend	AssetMapper, Tailwind v4, Hotwire Turbo, Stimulus
Runtime	FrankenPHP
Dev tooling	Docker Compose, Adminer, Mailpit

Requirements

• Docker and Docker Compose
• That's it (Google OAuth credentials additionally required to connect Gmail accounts — see Environment Variables)

Getting Started

git clone https://github.com/karatektus/pl_mail.git
cd pl_mail
cp .env .env.local          # adjust DATABASE_URL, MERCURE_JWT_SECRET, APP_ENCRYPTION_KEY, etc.
docker compose up --build

Then open https://localhost.

On first run, Doctrine migrations run automatically via the entrypoint. Create your first user (php bin/console app:setup, or register in the UI), then add an IMAP account or connect a Gmail account via OAuth — the first sync kicks off immediately.

To connect Gmail accounts, set GOOGLE_OAUTH_CLIENT_ID, GOOGLE_OAUTH_CLIENT_SECRET and GMAIL_PUBSUB_TOPIC in .env.local first.

Console Commands

Command	Description
app:setup	Create the first admin user (interactive)
app:mail:sync [account-id]	Dispatch an account-level sync (IMAP or Gmail) for one or all active accounts
app:mail:send-draft [message-id]	Send a draft message (picker if no ID given)
app:contacts:harvest [account-id]	Harvest contact addresses from synced messages
app:label:backfill [--account=ID]	Create labels from existing mailboxes and backfill message/thread label assignments
app:imap:idle <mailbox-id>	Hold an IMAP IDLE connection for a single mailbox, dispatch sync on change
app:imap:supervise	Spawn and watch one app:imap:idle process per IDLE-enabled mailbox
app:imap:test [--account=ID]	Test an IMAP connection and folder listing
app:gmail:renew-watches	Renew Gmail push-notification watches expiring within 24 hours
app:user:promote <email> [--revoke]	Grant (or revoke) ROLE_ADMIN for a user
app:monitoring:prune [--days=N] [--heartbeat-days=N]	Prune old log entries and dead process heartbeats
app:reset	Truncate synced data (messages, threads, optionally mailboxes/labels) — useful during development

The imap-supervisor and messenger-worker services start automatically with docker compose up and restart on failure. Schedule app:mail:sync, app:gmail:renew-watches and app:monitoring:prune via cron or the Symfony Scheduler as needed.

Environment Variables

Variable	Description	Default
DATABASE_URL	PostgreSQL connection string	see .env
MESSENGER_TRANSPORT_DSN	Messenger transport	doctrine://default?auto_setup=0
MERCURE_URL	Internal Mercure hub URL	http://mercure/.well-known/mercure
MERCURE_PUBLIC_URL	Browser-facing Mercure URL	https://localhost/.well-known/mercure
MERCURE_JWT_SECRET	Shared secret for Mercure JWT signing	—
APP_SECRET	Symfony app secret	—
APP_ENCRYPTION_KEY	Base64 libsodium key encrypting account credentials at rest (separate from APP_SECRET)	dev key in .env
GOOGLE_OAUTH_CLIENT_ID	Google OAuth client ID (required for Gmail accounts)	—
GOOGLE_OAUTH_CLIENT_SECRET	Google OAuth client secret (required for Gmail accounts)	—
GMAIL_PUBSUB_TOPIC	Cloud Pub/Sub topic used for Gmail push watches	—
MAILER_DSN	Symfony Mailer transport (system mail)	null://null

Generate a fresh APP_ENCRYPTION_KEY with:

php -r 'echo base64_encode(sodium_crypto_secretbox_keygen());'

Roadmap

• Complete the label-based architecture refactor (Label as the user-facing concept; Mailbox demoted to IMAP sync infrastructure)
• Sanitize rendered HTML bodies (currently rendered raw)
• Gmail-native threadId threading (currently RFC Message-ID based)
• Incoming IMAP flag sync over the IDLE stream
• Microsoft OAuth2 / Graph send support
• Avatar fetching (once OAuth avatar scopes are wired)
• Full-text search
• Nested label UI

License

AGPL-3.0 — see LICENSE for details.