marclou/mailcheap
Newsletters where you pay for the emails you send, not for dormant subscribers, at a fraction of the price of beehiiv and the like. Open source: self-host it, or use mailcheap.ai.
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Newsletters where you pay for the emails you send, not for dormant subscribers, at a fraction of the price of beehiiv and the like. Open source: self-host it, or use mailcheap.ai.
Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 80 MB of RAM.
The world's best AI personal assistant for email. Open source app to help you reach inbox zero fast.
An all-in-one email service platform powered by Cloudflare | 基于 Cloudflare 的一站式邮箱服务平台 | Cloudflare Email 邮箱 Mail
Email for professionals and teams
Self-hosted JMAP webmail for Stalwart Mail Server. Mail, calendar, contacts, and files in one client.
Check if an email address exists without sending any email, written in Rust. Comes with a ⚙️ HTTP backend.
Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)
CloudFlare free temp domain email 免费收发 临时域名邮箱 支持附件 IMAP SMTP TelegramBot
Free email OSINT tool, 5000+ platforms, identity clustering, breach detection. No API keys required. pip install mailaccess
Macro is a unified workspace for teams: email, chat, docs, tasks, agents, calls, and CRM — @-linked together with shared AI memory.
CLI to manage emails
The open-source communication infrastructure for agents and products
:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
A self-hosted, unified webmail client.
Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.
The SimpleLogin back-end and web app
Low code web framework for real world applications, in Python and Javascript
Prometheus Alertmanager
Self-hosted multi-account email client with support for JMAP/IMAP/SMTP, direct integration with Gmail and Outlook APIs. Also Contacts and Calendar. Built with Go, templ, and HTMX, SQLite for storage
Keep passwords and other sensitive information out of your chat logs and inboxes.
Fully featured, open source, privacy friendly email app for Android
The open-source email platform — self-host on your own AWS SES, or use the cloud. Resend-compatible API.
Open source alternative to Resend, Sendgrid, Postmark etc.
Privacy-focused encrypted email for everyone. All-in-one alternative to Gmail + Mailchimp + Sendgrid.
The largest open-source B2B cold outreach and email warmup service.
Bichon – A lightweight, high-performance Rust email archiver with WebUI
📧✨ Beautiful email. For everyone.
Self-hosted email server for SaaS teams on Cloudflare Workers with WebMCP support
Mail and calendar for Linux and macOS. Gmail and IMAP accounts, Google Calendar, contacts, OpenPGP and S/MIME. GTK4 and libadwaita, written in Rust.
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