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Top 23 TypeScript Email Projects
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Project mention: The open-source Agent Communication Infrastructure | news.ycombinator.com | 2026-06-21
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AppSignal
Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
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Project mention: Show HN: React Email 6.0 – An open-source email editor you can embed in your app | news.ycombinator.com | 2026-04-17
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Mailspring
:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
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SMTP (Simple Mail Transfer Protocol) is a standard method for sending emails through mail servers. Using the Nodemailer library, you can send emails through an SMTP server from your Express.js project.
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logto
🧑🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.
Microsoft Entra External ID is Microsoft's cloud-based CIAM service for customer-facing applications. It provides an external tenant customer directory, customizable authentication journeys, social and enterprise identity federation, multi-factor authentication, and integration with the Microsoft identity platform. It removes the need to operate an identity store, but it bills per monthly active user (MAU) above a free allowance of 50,000 MAU on the Basic tier, meters SMS phone verification separately by originating country, charges an additional per-MAU rate for the ID Governance add-on, and ties the directory and its authentication journeys to Microsoft Entra tenants. Logto is an open-source Customer Identity and Access Management (CIAM) platform built on the OAuth 2.1 and OpenID Connect (OIDC) standards, and it covers the same ground on self-hosted infrastructure without per-user billing or cloud provider API dependencies. It provides a branded sign-in experience, social and enterprise Single Sign-On (SSO) federation, multi-factor authentication (MFA), role-based access control (RBAC), organizations for multi-tenancy, and webhooks, and it stores every user, application, and role in a PostgreSQL database you control. This guide deploys Logto as an alternative to Microsoft Entra External ID with Docker Compose, Traefik, and automatic HTTPS, then covers the admin console, sign-in experience, connectors, enterprise SSO, MFA, RBAC, organizations, webhooks, and migration from Microsoft Entra External ID. By the end, you'll have a fully configured, self-hosted CIAM platform served securely over HTTPS.
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Inbox Zero
The world's best AI personal assistant for email. Open source app to help you reach inbox zero fast.
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Zero
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
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Tutanota makes encryption easy
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.
Project mention: Tuta: FOSS email service with privacy, encrypt emails, contacts and calendar | news.ycombinator.com | 2026-04-25 -
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Project mention: Launch HN: Unlayer (YC W22) – Add email and document builders to your app | news.ycombinator.com | 2026-07-22
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dittofeed
Open-source customer engagement. Automate transactional and marketing messages across email, SMS, mobile push, WhatsApp, Slack, and more 📨
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moemail
A cute temporary email service built with NextJS + Cloudflare technology stack 🎉 | 一个基于 NextJS + Cloudflare 技术栈构建的可爱临时邮箱服务🎉
Project mention: Your AI agent can fill in a signup form. It can't read the verification email. | dev.to | 2026-09-28If you would rather not depend on a hosted service at all, MoeMail is open source and runs on Cloudflare Workers. Point the packages at your own instance with MOEMAIL_API_URL; they default to moemail.app.
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nextacular
An open-source starter kit that will help you build full-stack multi-tenant SaaS platforms efficiently and help you focus on developing your core SaaS features. Built on top of popular and modern technologies such as Next JS, Tailwind, Prisma, and Stripe.
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upyo
Upyo is a simple and cross-runtime library for sending email messages using SMTP and various email providers. It works on Node.js, Deno, Bun, and edge functions.
Project mention: Upyo 0.6.0: MIME composition, streaming attachments, and calendar invitations | news.ycombinator.com | 2026-09-09 -
Project mention: I wrote the same email parser three times, and the hard part was making them fail identically | dev.to | 2026-09-04
Node: mailparser or postal-mime (we lean on postal-mime for our own Workers-side build).
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icloud-hide-my-email-browser-extension
Enjoy iCloud's Hide My Email service in your favourite browser
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
TypeScript Email discussion
TypeScript Email related posts
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Email Infrastructure for Open-Source Maintainers
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Your AI agent can fill in a signup form. It can't read the verification email.
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How to Block Disposable Emails at Signup (Free Temp Email Checker)
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The open-source Agent Communication Infrastructure
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Show HN: Mailflare – self-hosted email, custom domain with Cloudflare
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Tuta: FOSS email service with privacy, encrypt emails, contacts and calendar
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Show HN: React Email 6.0 – An open-source email editor you can embed in your app
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A note from our sponsor - SaaSHub
www.saashub.com | 9 Oct 2026
Index
What are some of the best open-source Email projects in TypeScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | novu | 40,104 |
| 2 | react-email | 19,803 |
| 3 | Mailspring | 17,890 |
| 4 | Nodemailer | 17,684 |
| 5 | logto | 14,649 |
| 6 | Inbox Zero | 12,426 |
| 7 | Zero | 10,840 |
| 8 | Tutanota makes encryption easy | 7,982 |
| 9 | ProtonMail Web Client | 5,624 |
| 10 | react-email-editor | 5,233 |
| 11 | dittofeed | 2,992 |
| 12 | moemail | 2,824 |
| 13 | emailjs | 2,209 |
| 14 | email-builder-js | 1,761 |
| 15 | javascript | 1,676 |
| 16 | deltachat-desktop | 1,621 |
| 17 | vmail | 1,490 |
| 18 | nextacular | 1,390 |
| 19 | meru | 1,034 |
| 20 | skiff-apps | 994 |
| 21 | upyo | 586 |
| 22 | postal-mime | 551 |
| 23 | icloud-hide-my-email-browser-extension | 537 |
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Monitoring that respects your time & budget
APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
www.appsignal.com