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A generic Erlang SMTP client and server framework that can be extended via callback modules in the OTP style.

Since release 0.7, gen_smtp is in use by Zotonic for all e-mail handling in Zotonic, both outgoing and incoming. gen_smtp is maintained by Andrew Thompson.

Before 0.7 we used esmtp Is used by the module mod_emailer for all the e-mail handling in Zotonic. esmtp Is maintained by Geoff Cant.