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Tag: Mail server

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16 repositories by Attention Score · May 8, 2026 – Nov 3, 2026 (UTC)

Tag: Mail server

1.maillab / cloud-mail

TranslatedAn all-in-one email service platform powered by Cloudflare | Cloudflare Email Mail

email
cloudflare-email
cloudflare
cloudflare-workers
mail

JavaScript MIT15K total23K forks

+6,856 stars

from 8,508 · score 8.83

2.stalwartlabs / stalwart

All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

imap
jmap
mail
rust
server
smtp
+4 more

Rust No license16K total1K forks

+3,169 stars

from 12,535 · score 8.06

3.dreamhunter2333 / cloudflare_temp_email

TranslatedCloudFlare free temp domain email, free to send and receive, temporary domain mailbox, supports attachments, IMAP, SMTP, TelegramBot

cloudflare-email
cloudflare-pages
cloudflare-workers
email
free

TypeScript MIT12K total8K forks

+3,121 stars

from 8,931 · score 8.05

4.Billionmail / BillionMail

BillionMail gives you open-source MailServer, NewsLetter, Email Marketing — fully self-hosted, dev-friendly, and free from monthly fees. Join the discord: https://discord.gg/asfXzBUhZr

email-marketing
mail
mailserver
email
server
smtp
+5 more

Go AGPL-3.016K total1.8K forks

+1,685 stars

from 14,496 · score 7.43

5.docker-mailserver / docker-mailserver

Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.

mailserver
mail
postfix
dovecot
ldap
fail2ban
+5 more

Shell MIT20K total2.1K forks

+1,649 stars

from 18,070 · score 7.41

6.mailcow / mailcow-dockerized

mailcow: dockerized - 🐮 + 🐋 = 💕

mailcow
mailserver
groupware
sogo
rspamd
postfix
+11 more

JavaScript GPL-3.014K total1.9K forks

+1,178 stars

from 12,561 · score 7.07

7.postalserver / postal

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

ruby
mail
smtp
postal
mail-server

Ruby MIT17K total1.3K forks

+507 stars

from 16,411 · score 6.23

8.Mailu / Mailu

Insular email distribution - mail server as Docker images

docker
email
imap
pop3
webmail
mailserver
+9 more

Python Other license7.6K total1K forks

+467 stars

from 7,136 · score 6.15

9.mjl- / mox

modern full-featured open source secure mail server for low-maintenance self-hosted email

Go MIT5.9K total239 forks

+307 stars

from 5,621 · score 5.73

10.mail-in-a-box / mailinabox

Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.

smtp
email
mail
server

Python CC0-1.015K total1.6K forks

+245 stars

from 15,209 · score 5.51

11.foxcpp / maddy

✉️ Composable all-in-one mail server.

imap
smtp
mail
dkim
dmarc
spf
+1 more

Go GPL-3.06.1K total344 forks

+204 stars

from 5,915 · score 5.32

12.forwardemail / forwardemail.net

Privacy-focused encrypted email for everyone. All-in-one alternative to Gmail + Mailchimp + Sendgrid.

email
forwarding
forwarder
free
custom
domain
+11 more

JavaScript Other license1.7K total206 forks

+142 stars

from 1,560 · score 4.96

13.haraka / Haraka

A fast, highly extensible, and event driven SMTP server

smtp
mta
javascript
spf
dkim
nodejs
+1 more

JavaScript MIT5.6K total721 forks

+117 stars

from 5,516 · score 4.77

14.modoboa / modoboa

Mail hosting made simple

javascript
email
django
postfix
dovecot
hosting
+7 more

Python ISC3.5K total488 forks

+88 stars

from 3,454 · score 4.49

15.iredmail / iRedMail

Full-featured, open source mail server solution for mainstream Linux/BSD distributions.

email
server
foss
freebsd
openbsd
centos
+4 more

Shell GPL-3.01.9K total263 forks

+76 stars

from 1,774 · score 4.34

16.zone-eu / wildduck

Opinionated email server

imap-server
lmtp
mongodb
pop3-server

JavaScript EUPL-1.22.1K total286 forks

+29 stars

from 2,084 · score 3.40

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