listmonk
Mail ServersSelf-hosted newsletter and mailing list manager
Replaces Mailchimp, Sendinblue
Best PostgreSQL Mail Servers for self-hosting
The 10 best PostgreSQL mail servers you can self-host, ranked by community traction.
Postal
Mail ServersComplete mail delivery platform for outgoing email
Replaces SendGrid, Mailgun
Keila
Mail ServersOpen-source newsletter tool for senders
Replaces Mailchimp, Sendinblue
iRedMail
Mail ServersFree, full-featured mail server solution
Replaces Microsoft Exchange, Google Workspace
Cuttlefish
Mail ServersTransactional email server with click and open tracking
Replaces Mailgun, SendGrid
PostfixAdmin
Mail ServersWeb interface for managing Postfix mail domains
Replaces cPanel Email
Mailman
Mail ServersFree software for managing electronic mailing lists
Replaces Google Groups
Sympa
Mail ServersScalable mailing list management software
Replaces Google Groups
HyperKitty
Mail ServersWeb archive interface for Mailman 3 mailing lists
Replaces Google Groups
Postorius
Mail ServersWeb administration interface for Mailman 3
Replaces Google Groups
No apps match these filters.
At a glance
| App | Deploy effort | Difficulty | Min. RAM | License | ★ Stars |
|---|---|---|---|---|---|
| listmonk | Under-an-hour setup | Easy | 512 MB | AGPL-3.0 | 23,776 |
| Postal | Under-an-hour setup | Hard | 2,048 MB | MIT | 16,862 |
| Keila | Under-an-hour setup | Easy | 512 MB | AGPL-3.0 | 2,232 |
| iRedMail | Read-the-docs project | Medium | 4,096 MB | GPL-3.0 | 1,846 |
| Cuttlefish | Under-an-hour setup | Medium | 1,024 MB | AGPL-3.0 | 1,626 |
| PostfixAdmin | Under-an-hour setup | Medium | 256 MB | GPL-2.0 | 1,262 |
| Mailman | Under-an-hour setup | Hard | 1,024 MB | GPL-3.0 | 400 |
| Sympa | Under-an-hour setup | Hard | 1,024 MB | GPL-2.0 | 318 |
| HyperKitty | Under-an-hour setup | Hard | 1,024 MB | GPL-3.0 | 200 |
| Postorius | Under-an-hour setup | Hard | 512 MB | GPL-3.0 | 200 |
Quick picks
- Most adopted: listmonk (23,776 GitHub stars).
- Lightest footprint: PostfixAdmin (from 256 MB RAM, against 4,096 MB for the heaviest here).
- Licensing: 4 of 10 use GPL-3.0; check the rest individually if you plan to modify and redistribute.
Every option here is open-source and self-hostable, tagged PostgreSQL within the mail servers category. Deploy effort is graded from published container recipes, not vendor claims — see the methodology.