github.com/siebenmann/sinksmtp

Sinksmtp is a 'sink' SMTP server, one that talks SMTP and potentially captures incoming email, but doesn't do anything with any email it captures except log it to disk. The author uses it to capture incoming spam to what are now spamtrap addresses.

Sinksmtp supports TLS if configured, among other things.

Sinksmtp supports a number of ways to filter and select what incoming SMTP transactions can get as far as submitting messages and which ones are refused earlier. The author uses this to filter out uninteresting spam and spam sources in his spamtrap server.

See doc.go / godoc for the detailed documentation.

Sinksmtp uses my smtpd Go package[*] to handle the low level details of SMTP serving. It was previously part of the source repo for that package, as a usage example, but it has considerably outgrown being a simple usage example and has now moved into a separate repo.

There are some fancier packages that may be better alternatives to sinksmtp for things like accepting email for testing or as a logging mechanism for systems that don't have anything else. The ones that I know of are: https://github.com/mailhog/MailHog http://mailslurper.com/

A feature for both of these is a web interface that let you see and browse the received email messages. Sinksmtp just dumps any email into the filesystem, where it's up to you to monitor it and pull it out.

Chris Siebenmann

https://github.com/siebenmann/sinksmtp

Copyright: GPL v3

[*: https://github.com/siebenmann/smtpd ]