Better Auth Harmony alternatives for AI agents.

💌 Build and send emails using React

Experience email the way you want with Mail0 – the first open source email app that puts your privacy and safety first. Join the discord: https://mail0.link/discord

CloudFlare free temp domain email 免费收发 临时域名邮箱 支持附件 IMAP SMTP TelegramBot

🧑‍🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.

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.

A next.js web application that integrates AI capabilities with draw.io diagrams. This app allows you to create, modify, and enhance diagrams through natural language commands and AI-assisted visualization.

Virtual whiteboard for sketching hand-drawn like diagrams

MJML: the only framework that makes responsive-email easy

Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.

Omnivore is a complete, open source read-it-later solution for people who like reading.

An Obsidian plugin that embeds Claude Code/Codex as an AI collaborator in your vault

A Cloudflare-based email service | 基于 Cloudflare 的邮箱服务 | Cloudflare Email 邮箱 Mail

Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)

Agentic AI Infrastructure for magnifying HUMAN capabilities.

Agentic AI Infrastructure for magnifying HUMAN capabilities.

✉️ Send e-mails with Node.JS – easy as cake!