plMail

AgentMail is an email inbox API for AI agents, providing real inboxes that agents can create, send from, receive mail in, and search. It is designed to give each agent an email address for service signups, verification messages, replies, billing, and support communication. The API supports inbox and domain management, threads and replies, attachments, real-time events, custom domains, multi-tenancy, semantic search, data extraction, SDKs, and MCP access. The service offers integrations and setup guides for agent tools including Claude Code, Hermes, OpenClaw, Codex, Cursor, and Grok, with a free tier and no credit card required.

Mailflare is a self-hosted email inbox for custom domains, built on Cloudflare. It provides domain connection and Cloudflare Email Routing setup, personal and shared mailboxes with delegated access, message composition and receiving with attachments and rich formatting, and organization tools such as search, folders, stars, snoozing, archiving, spam, and trash. Routing rules can store, forward, reject, or categorize incoming messages. When deployed to Cloudflare, Mailflare uses Email Routing for inbound delivery, Cloudflare's email service for outbound messages, a D1 database for mail data, and an R2 bucket for attachments. It can also run as a Docker container using SQLite and local files, with a built-in SMTP listener or a Cloudflare relay Worker for inbound mail and an SMTP relay or Cloudflare Email Sending for outbound mail. The project also includes account and permission management, API keys, webhooks, audit logs, backups, import and export, contacts, and sender blocking.

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.

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.

JMail is a Gmail fork and searchable web application built around the released Epstein files. It lets users access an inbox presented as if they were Jeffrey Epstein, using structured data extracted from more than three million pages of redacted PDFs by Reducto. JMail grew into a suite of related applications, including JFlights, which turns handwritten flight logs and other difficult documents into searchable records.