6 self-hosted options
Open-source alternatives to Twilio SendGrid
The best open-source alternatives to Twilio SendGrid are Postal, Listmonk and Haraka.
About Twilio SendGrid: A transactional and marketing email delivery API.
Every option below is free to self-host and ranked by GitHub stars, so you can move off Twilio SendGrid without giving up the features you rely on.
Top picks
- Rank 1:
Postal
postalserver/postal
Complete and fully featured mail server for use by websites & web servers.
Email ServersRubyDocker - Rank 2:
Listmonk
knadh/listmonk
High performance, self-hosted newsletter and mailing list manager with a modern dashboard.
Newsletters & Mailing ListsGoDocker - Rank 3:
Haraka
haraka/Haraka
Fast, highly extensible, and event driven SMTP server.
Email ServersJavaScript
Why switch
Why teams move off Twilio SendGrid
Self-hosting is not only about saving money. These are the reasons people make the switch.
Own your data
Your data lives on a server you control, not on Twilio SendGrid's infrastructure. No surprise policy changes and no lock-in.
No per-seat pricing
Open-source alternatives to Twilio SendGrid are free to run for as many users as your server can handle. A small VPS often costs less than a single subscription.
Customize and extend
Read the code, add plugins, connect it to your own tools and automate it through open APIs. When you need a feature, you can build it or fund it.
Full ranking
All 6 Twilio SendGrid alternatives
Ranked by GitHub stars. Open any app for live stats, license details and a deploy option.
- 1
Postal
Complete and fully featured mail server for use by websites & web servers.
Email ServersDocker - 2
Listmonk
High performance, self-hosted newsletter and mailing list manager with a modern dashboard.
Newsletters & Mailing ListsDocker - 3
Haraka
Fast, highly extensible, and event driven SMTP server.
Email Servers - 4
Stalwart Mail Server
All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features.
Email ServersDocker - 5
Maddy Mail Server
All-in-one mail server that implements SMTP (both MTA and MX) and IMAP. Replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC with single daemon.
Email Servers - 6
Novu
Notification infrastructure for developers.
Team ChatDocker
What is the best open-source alternative to Twilio SendGrid?
Postal is the most popular open-source alternative to Twilio SendGrid, with 16,854 GitHub stars. Listmonk and Haraka are also strong choices. Compare features, license and recent activity to find the best fit for your team.
Is there a free alternative to Twilio SendGrid?
Yes. All 6 apps on this page are open source and free to self-host, so you can run a Twilio SendGrid replacement without per-user fees. You only pay for the server, and a small VPS is usually enough for personal use or a small team.
Can I self-host an alternative to Twilio SendGrid?
Yes. Postal, Listmonk and Stalwart Mail Server ship a Docker image, so you can run them on a home server or VPS with Docker Compose in a few minutes. Your data then stays on hardware you control.
How do I migrate from Twilio SendGrid?
Start by exporting your data from Twilio SendGrid, then check the import options of the app you pick, since many projects ship importers for popular formats. Run both side by side for a week before you switch so nothing is lost.