Best Self-hosted Email Platforms in 2026

Postal

Robust, scalable email delivery for your applications

Stars
16,480
Forks
1,233
Last commit
3 days ago

Self-hosted email delivery platform with powerful features for transactional and bulk emails, offering full control and customization.

Open Source Alternative to:

Resend

Freescout

Open-source helpdesk for seamless customer support

Stars
4,225
Forks
659
Last commit
3 days ago

Self-hosted email management system with shared inboxes, automation, and powerful collaboration features for efficient customer support.

Open Source Alternative to:

Zendesk

Keila

Open-source email marketing for the privacy-conscious

Stars
2,081
Forks
146
Last commit
12 hours ago

Self-hosted newsletter platform with powerful features, data protection, and full control over your mailing lists and campaigns.

Open Source Alternative to:

Substack

Hyvor Relay

Open-source email API with enterprise deliverability

Stars
574
Forks
29
Last commit
2 days ago

Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.

Open Source Alternative to:

Resend

Sendportal

Self-hosted email marketing with unlimited everything

Stars
2,126
Forks
458
Last commit
2 years ago

Open-source email marketing platform offering unlimited subscribers, campaigns, and workspaces. Self-hosted solution with powerful API and beautiful interface.

Open Source Alternative to:

Resend

DoubleZero

Self-hosted email infrastructure for developers

Stars
1,241
Forks
66
Last commit
2 years ago

00 is an open-source email API and infrastructure solution that allows developers to own and control their email stack.

Open Source Alternative to:

Resend

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Postal

Robust, scalable email delivery for your applications

Stars
16,480
Forks
1,233
Last commit
3 days ago

Self-hosted email delivery platform with powerful features for transactional and bulk emails, offering full control and customization.

Open Source Alternative to:

Resend

Freescout

Open-source helpdesk for seamless customer support

Stars
4,225
Forks
659
Last commit
3 days ago

Self-hosted email management system with shared inboxes, automation, and powerful collaboration features for efficient customer support.

Open Source Alternative to:

Zendesk

Keila

Open-source email marketing for the privacy-conscious

Stars
2,081
Forks
146
Last commit
12 hours ago

Self-hosted newsletter platform with powerful features, data protection, and full control over your mailing lists and campaigns.

Open Source Alternative to:

Substack

Hyvor Relay

Open-source email API with enterprise deliverability

Stars
574
Forks
29
Last commit
2 days ago

Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.

Open Source Alternative to:

Resend

Sendportal

Self-hosted email marketing with unlimited everything

Stars
2,126
Forks
458
Last commit
2 years ago

Open-source email marketing platform offering unlimited subscribers, campaigns, and workspaces. Self-hosted solution with powerful API and beautiful interface.

Open Source Alternative to:

Resend

DoubleZero

Self-hosted email infrastructure for developers

Stars
1,241
Forks
66
Last commit
2 years ago

00 is an open-source email API and infrastructure solution that allows developers to own and control their email stack.

Open Source Alternative to:

Resend

Self-hosted Email Platforms

A curated collection of the best self-hosted platforms for hosting your own email sending infrastructure.