Top 6 Shell smtp-server Projects

docker-smtp

1 537 0.0 Shell

SMTP docker container (by namshi)
docker-postfix

6 469 8.4 Shell

Simple SMTP server / postfix null relay host for your Docker and Kubernetes containers. Based on Alpine Linux.
WorkOS

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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.
docker-postfix

1 318 2.1 Shell

Simple SMTP relay docker image. (by juanluisbaptiste)
postfix-relay

2 111 6.5 Shell

Postfix SMTP relay docker image
smtp

1 79 5.0 Shell

This is a SMTP docker container for sending emails. You can also relay emails to gmail and amazon SES. (by ix-ai)

Project mention: Mail-in-a-Box: a mail server in a box | news.ycombinator.com | 2023-11-24

If all I needed was SMTP? I'd likely just use Amazon SES or Mailgun.
I know some folks have concerns with the privacy of that(1), and really want to run their own SMTP. If that's the case, Mail In A Box can do the job, or you can go with a pure SMTP solution like https://github.com/ix-ai/smtp (not endorsing it -- it's just been on my radar) or a roll-your-own Postfix/Exim solution. The latter requires almost zero resources after it's set up; slap it on a $20/year VM and you're done.
1. Chasing privacy with email is a chimera. If you really want private communications, email is not the tool.

docker-imap-devel

2 60 0.0 Shell

Dockerized SMTP/IMAP server for development

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).