Alternatives to Mailgun in 2026

React Email resend

💌 Build and send emails using React

Developer tool Production-ready Your team writes React and wants maintainable, previewable email templates for any sending provider.

★ 20k MIT TypeScript Active, pushed 3 days ago

MJML mjmlio

MJML: the only framework that makes responsive email easy

Framework or platform Production-ready Anyone who hand-codes HTML emails and wants them to render in Outlook and Gmail without table hacks.

★ 18k MIT JavaScript Active, pushed 10 days ago

Postal postalserver

📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail

Complete system Production-ready You send large volumes of transactional email and want your own Sendgrid-style platform on your own IPs.

★ 17k MIT Ruby Active, pushed 4 days ago

Plunk useplunk

The Open-Source Email Platform

Complete system Usable You want one open-source tool for both product emails and newsletters on AWS SES.

★ 5.6k AGPL-3.0 TypeScript Active, pushed yesterday

React Email Editor unlayer

Drag-n-Drop Email Editor Component for React.js

Integration Production-ready Your product needs users to design emails or newsletters inside it.

★ 5.3k MIT TypeScript Active, pushed 2 days ago

useSend usesend

Open source alternative to Resend, Sendgrid, Postmark etc.

Complete system Usable You want Resend or Postmark convenience at SES prices, hosted or self-hosted.

★ 4.8k AGPL-3.0 TypeScript Active, pushed 3 days ago

Posta goposta

Self-hosted email delivery platform that enables applications to send emails via HTTP APIs while handling SMTP delivery, templates, storage, security, and analytics. Fully self-hostable alternative to services like SendGrid or Mailgun.

Complete system Experimental You want your apps' transactional email behind one self-hosted API with logs and templates.

★ 633 AGPL-3.0 Go Active, pushed yesterday

Mrml jdrouet

Implementation of mjml in rust

Building block Usable You render MJML at high volume or outside Node.js and want speed.

★ 510 MIT HTML Active, pushed 17 days ago

Larasend savvyagents

Self-hosted transactional email platform — send through your own AWS SES account, keep the dashboard, API keys, delivery logs, and webhooks on your own infrastructure.

Complete system Experimental A Laravel team wants Resend-style tooling while keeping data and costs on its own SES account.

★ 440 MIT PHP Active, pushed 3 months ago

Elements unlayer

React components for transactional emails, landing pages, invoices and PDFs: email-safe HTML, responsive web HTML, and print-ready PDF HTML from one component tree.

Building block Experimental You produce emails, invoices and documents from React and want one set of components for all of them.

★ 423 MIT TypeScript Active, pushed 13 days ago

Mjml.Net SebastianStehle

.NET Fork of MJML library with 10x performance and 100% feature parity

Building block Usable A .NET application renders MJML emails and you want to avoid a Node dependency.

★ 271 MIT C# Active, pushed 2 months ago

MillionSend MillionSend

The open-source email platform — self-host on your own AWS SES, or use the cloud. Resend-compatible API.

Complete system Experimental You use Resend's API but want to self-host on SES to cut costs.

★ 258 AGPL-3.0 TypeScript Active, pushed 6 days ago

EmailFlare 0xdps

Self-hosted email sending platform built on Cloudflare Email Sending — REST API, admin UI, templates, domain management, scoped API keys, all in one Docker container.

Complete system Experimental You already use Cloudflare and want a small self-hosted sending service on it.

★ 255 MIT TypeScript Active, pushed 19 days ago

Posthorn craigmccaskill

Self-hosted email gateway between your apps and a transactional mail provider (Postmark, Resend, Mailgun, AWS SES, or outbound-SMTP). Three ingress shapes (HTTP form, HTTP API, SMTP). One Docker container, one TOML config.

Integration Usable A homelab or small team runs several apps that each need outbound email and wants one place to configure it.

★ 215 Apache-2.0 Go Active, pushed 19 days ago

Senlo IgorFilippov3

Open-source, self-hosted & provider-agnostic email infrastructure.

Complete system Experimental A product team wants its email templates and sending logic in its own system rather than in a vendor's dashboard.

★ 177 AGPL-3.0 TypeScript Active, pushed 15 days ago

Catapulte jdrouet

Rust implementation of catapulte email sender

Complete system Usable You want a small self-hosted service that renders MJML templates and sends them for your apps.

★ 153 AGPL-3.0 Rust Active, pushed 39 days ago

Mjml_nif adoptoposs

Elixir NIF bindings for the MJML Rust implementation (mrml)

Building block Usable Your Elixir or Phoenix app sends MJML emails and you want them compiled natively.

★ 144 MIT Elixir Active, pushed 5 days ago

Gomjml preslavrachev

A native Go implementation of the MJML email framework, providing fast compilation of MJML markup to responsive HTML.

Building block Usable A Go service renders MJML emails and you want no Node or WebAssembly runtime.

★ 125 MIT Go Active, pushed 40 days ago

Mjml-php spatie

Convert MJML to HTML using PHP

Building block Production-ready Your PHP or Laravel app builds emails in MJML and you can install Node on the server.

★ 283 MIT PHP Slowing, pushed 3 months ago

Mjml-python mgd020

A python library for MJML - a framework that makes responsive-email easy

Building block Usable A Python or Django app renders MJML emails and you want it fast and dependency-light.

★ 110 MIT Python Active, pushed 2 months ago

Mjml-react wix-incubator

React component library to generate the HTML emails on the fly

Building block Usable Only for legacy code already using it.

★ 998 MIT JavaScript Quiet, pushed 4 years ago

MJML App mjmlio

:email: The desktop app for MJML

Developer tool Usable Rarely now; the official editor plugins and online tools are maintained.

★ 846 MIT JavaScript Quiet, pushed 4 years ago

MjmlBundle notFloran

✉️ Symfony bundle for MJML

Integration Usable Your Symfony app sends MJML-based emails.

★ 116 MIT PHP Slowing, pushed 6 months ago

Gulp MJML mjmlio

Add Gulp to your MJML workflow!

Developer tool Usable You still build email templates with Gulp.

★ 159 MIT JavaScript Quiet, pushed 4 years ago

GlowLabs amamenko

MERN stack application for appointment booking and employee/client management

Template or starter Experimental You want to study a full MERN booking app as a reference.

★ 131 MIT JavaScript Quiet, pushed 4 years ago

Mjml-go Boostport

Compile MJML to HTML directly in your Go applications!

Building block Usable You need exact MJML output in Go and prefer the official code over a reimplementation.

★ 120 Apache-2.0 Go Quiet, pushed 15 months ago

Wagtail-birdsong neon-jungle

Create, send, preview, edit and test email campaigns from within Wagtail

Integration Experimental Your site runs on Wagtail and editors want to send newsletters from the same admin.

★ 113 BSD-3-Clause Python Quiet, pushed 2 years ago

Mjml-utils justinsisley

The utility belt for MJML developers

Developer tool Experimental Rarely; it has been idle since 2018.

★ 111 MIT JavaScript Quiet, pushed 9 years ago

SendGrid Twilio

SendGrid's trusted email API and marketing campaigns platform is now available through Twilio.com.

Building block Production-ready An application needs to send high volumes of email through a well-known API.

283 readers a month Since 2009 Commercial

Amazon SES Amazon Web Services

Amazon Simple Email Service (SES) is a cost-effective, flexible, and scalable email service provider that allows developers to send email from within any application.

Building block Production-ready You send large volumes of email, run on AWS and can manage deliverability yourself.

Commercial

Postmark ActiveCampaign

Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers.

Building block Production-ready Password resets, receipts and other critical app email must arrive quickly and reliably.

Commercial

Resend Resend

The best way to reach humans instead of spam folders. Deliver transactional and marketing emails at scale.

Building block Usable A modern web app team, especially using React and Next.js, wants a clean email API that is quick to integrate.

Commercial