Gofer

Flectar Mail is a native, open-source email, calendar, and contacts client built with Rust. It uses a local-first data path, stores synced mail and calendar data locally for offline use, and connects to Gmail, Outlook, Microsoft 365, IMAP/SMTP, JMAP, CalDAV, and CardDAV services. Instead of opening email in a WebView, Flectar Mail renders HTML and CSS through Blitz, a Rust renderer from the Dioxus team. It does not execute email scripts and blocks remote images by default; HTML rendering remains experimental, so complex messages may display incorrectly. The client also provides local access to attachments and WebDAV/JMAP files, account signatures, and desktop OpenPGP/MIME signing and encryption through installed GnuPG 2.x. The project is licensed under the GNU Affero General Public License v3. It provides desktop builds for Linux, Windows, and macOS, plus an experimental Android APK, and can be built from source with Rust. It is currently in development and not yet stable; early releases require users to configure their own OAuth applications for Gmail and Outlook or use IMAP/JMAP accounts.

plMail is a self-hosted mail client with a calendar alongside it. It connects existing IMAP, Gmail, and Outlook mailboxes, synchronizes them into a PostgreSQL database, and presents them in one inbox with threaded conversations, shared labels, full-text search, filters, and sending aliases. It is not a mail server and does not receive internet mail or host a domain. New mail is delivered through IMAP IDLE, Gmail and Outlook push, and browser notifications. The calendar supports two-way synchronization with Google, Microsoft, and CalDAV, including invitations, drag-to-move scheduling, sharing, and booking links. Optional language-model features can use Ollama or an OpenAI-compatible endpoint to search by meaning, draft replies, summarize threads, and sort messages; these features are disabled by default and can be run against a model on the user's own network. The project provides Docker images for linux/amd64 and linux/arm64, a TrueNAS app, and companion Android and iOS applications that connect to a plMail server. It is released under the AGPL-3.0 license.

Gmail is an email service developed and operated by Google that provides web-based email, POP/IMAP access, storage, spam filtering, and integration with other Google services. It was launched in 2004 and is available for individual and enterprise (Google Workspace) users.

Open Archiver is a self-hosted, open-source platform for archiving, storing, indexing, and searching email from Google Workspace, Microsoft 365, IMAP inboxes, PST files, zipped EML files, and Mbox files. It supports bulk imports and ongoing synchronization, and provides full-text search across messages and attachments with filters and thread discovery. Messages are stored as standard EML files with deduplication, compression, and encryption at rest. Storage can use a local filesystem or an S3-compatible object store. The system records file hashes during ingestion and provides integrity reports, retention policies, and an immutable audit trail for access and activity tracking. The platform is deployed with Docker Compose and uses SvelteKit, Node.js with Express and TypeScript, BullMQ with Redis or Valkey for asynchronous jobs, Meilisearch for indexing, and PostgreSQL for metadata, users, and audit logs.

Maildun is a self-hosted email platform for teams that combines audience management, email campaigns, transactional email, automations, and first-party engagement tracking in one application. It runs on the operator's infrastructure and sends workspace email through Amazon SES or SMTP, with audiences supporting custom attributes, tags, segments, CSV imports, double opt-in, and hosted subscribe forms. Campaigns use a visual editor and support reusable templates, scheduling, attachments, test sends, and engagement insights; transactional messages are exposed through a team-scoped, versioned JSON API; and event-driven automations use durable jobs that resume after restarts. It also provides SES bounce and complaint processing, optional local geolocation databases for tracking, team workspaces with roles and authentication features, Redis-backed queues, and an MCP server for AI-assisted workspace operations. The project is built with Laravel, Inertia, React, TypeScript, Redis, and Laravel Horizon, and is currently in beta. It is licensed under AGPL-3.0-only with additional attribution and naming terms.