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http://www.webdigi.co.uk/blog/2009/how-to-check-if-an-email-address-exists-without-sending-an-email/
Lamson: Lamson The Python SMTP Server
http://lamsonproject.org/

Lamson’s goal is to put an end to the hell that is “e-mail application development”. Rather than stay suck in the 1970’s, Lamson adopts modern web application framework design and uses a proven scripting language (Python).

"Pipes and aliases are so 1970. -- Lamson’s goal is to put an end to the hell that is “e-mail application development”. Rather than stay suck in the 1970’s, Lamson adopts modern web application framework design and uses a proven scripting language (Python)."

Lamson The Python SMTP Server

Do THIS once the unc servers are back up - argh!

http://gmailblog.blogspot.com/2009/07/send-mail-from-another-address-without.html

SMTP server for testing that does not forward e-mail but displays it in a GUI

Papercut is a simplified SMTP server

At its core SoS is just a Python based SMTP server that can receive emails, process them using handlers based on routing regex, and then relay results out again using templates. All of this is done without using alias files, m4 macros, pipes, weird protocols, or duplicate processing of the emails. SoS just works like a flexible scripting language SMTP should operate.

Zed's nice and simple little Python-based SMTP server that dispatches to handlers much like a modern web framework, and uses Mako templates. Can relay to postfix and the like for big volume.

programmable python mail server

A Python based SMTP server that can receive emails, process them using handlers based on routing regex, and then relay results out again using templates.

This looks very exciting! I love email based services b/c it is such a great interface for users, so this seems like it could prove to reinvigorate email as a platform, which seems like the future.

Extra setup required for your app to send email. Some tips on how to get that going, check that you have what you need, and test it's working

Just some tidbits to keep around in case I end up writing an smtp server on a side job I'm considering

ay actually exists, and all you have to do is use a service that already has all of this in place and follow their instructions. When it comes to sending transactional email from your web app, there are a few services popping up lately, but I’ll just explain h