Top 8 C SMTP Projects

neomutt

11 3,054 9.8 C

✉️ Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.libera.chat

Project mention: Show HN: Inbox Zero – open-source email assistant | news.ycombinator.com | 2023-12-29

https://github.com/neomutt/neomutt is a mature project with similar functionality in its arsenal via tagging and vim bindings, not limited to gmail either. You can also write emails in vim/$EDITOR fluidly.

magma

1 1,820 3.4 C

The magma server daemon, is an encrypted email system with support for SMTP, POP, IMAP, HTTP and MOLTEN,. Additional support for DMTP and DMAP is currently in active development. (by lavabit)
InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Dovecot

10 891 9.7 C

Dovecot mail server (by dovecot)

Project mention: My collection of Ansible roles for self-hosting everything with Rocky Linux and FreeIPA | /r/selfhosted | 2023-06-02

Mail server using Postfix, Dovecot, and Rspamd

Exim

9 699 9.2 C

Exim Mail Transport Agent - source, testsuite and documentation

Project mention: Is it right to blame Google/Yahoo for deprecating an email forwarding service? | news.ycombinator.com | 2024-01-14

Documentation for ARC is pretty sparse.
The instructions for setting it up in Exim (default MTA on Debian systems) can be found here: https://github.com/Exim/exim/blob/master/doc/doc-txt/experim...
(AFAICT, there is absolutely no mention of ARC in the main Exim documentation: https://exim.org/docs.html)

notqmail

1 300 7.5 C

The collaborative Open Source successor to qmail and netqmail
ESP-Mail-Client

8 178 8.2 C

The comprehensive Arduino Email Client Library to send and read Email for Arduino devices. The library also supports other network shields or modules e.g., Wi-Fi, Ethernet, and GSM/4G modules.
smtp-client

1 92 0.0 C

SMTP Client Library in C
WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
VESmail

9 10 3.3 C

Email Encryption made Convenient and Reliable

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2024-01-14.