# Open-source alternatives to Twilio SendGrid

> Twilio SendGrid: A transactional and marketing email delivery API. The best self-hosted, open-source alternatives are Postal, Listmonk and Haraka. All of them can run on your own server, so your data stays under your control. All 6 apps here are open source.

## Key facts

| Fact | Value |
|---|---|
| Commercial product | Twilio SendGrid |
| Category | Email Servers |
| Alternatives listed | 6 |
| Top pick | Postal (16,854 stars, MIT) |
| Canonical URL | https://appsgit.com/alternatives/sendgrid |

## Alternatives, in recommended order

- [Postal](https://appsgit.com/apps/postal): Complete and fully featured mail server for use by websites & web servers. (16,854 stars, MIT, Ruby, Docker)
- [Listmonk](https://appsgit.com/apps/listmonk): High performance, self-hosted newsletter and mailing list manager with a modern dashboard. (23,701 stars, AGPL-3.0, Go, Docker)
- [Haraka](https://appsgit.com/apps/haraka): Fast, highly extensible, and event driven SMTP server. (5,613 stars, MIT, JavaScript)
- [Stalwart Mail Server](https://appsgit.com/apps/stalwart-mail-server): All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features. (14,971 stars, AGPL-3.0, Rust, Docker)
- [Maddy Mail Server](https://appsgit.com/apps/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. (6,099 stars, GPL-3.0, Go)
- [Novu](https://appsgit.com/apps/novu): Notification infrastructure for developers. (40,118 stars, MIT, TypeScript, Docker)

## Comparisons

- [listmonk vs Mautic](https://appsgit.com/compare/listmonk-vs-mautic)

More in this category: [Email Servers](https://appsgit.com/categories/email-servers)

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Canonical page: https://appsgit.com/alternatives/sendgrid
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