I really recommend "Mew"(http://www.mew.org/en/) as an option for email in Emacs. I was able to really customize it to my needs. Its exactly like Emacs in its extensibility.
Did anybody get a reply from reddit if you sent an email to the solution? I am wondering how long should I wait to be vindicated.
By the way, to get around the problem of slow, asynchronous bounce for the wrong solution address, I connected over SMTP to see if the answer email address(recipient) is valid or not for reddit.com. You can probably use that as a quicker test to validate if you have the right answer.
Gnus is a little overrated in my opinion.