Simple Python script as SMTP server for outgoing e-mails?

[Gilles]

On Mon, 22 Jul 2013 00:48:29 +1000, Chris Angelico <rosuav at gmail.com>
wrote:
>Rather than write something from scratch, I'd look at deploying
>something out-of-the-box - Postfix, for instance - which you will be
>able to configure much faster than writing your own. And then you
>could have it either send via your ISP or send directly to the
>receiving MTA, without much extra effort.

Thank you but precisely, I was looking for a "ready-to-use solution in
Python" so that I wouldn't have to write it myself.

Also, I don't need a full-fledged SMTP server, just a tiny script that
will let me send the occasional e-mails from my e-mail client that my
ISP wrongly considers as SPAM.

So, does someone know of a good, SMTP server just to send e-mails?

Thank you.