The Blogger Secret

Okay, for future reference, there is a trick to Blogger's post-by-mail
system. You have to send email from the same account registered with
Blogger. I was trying to send from my GMail account, and I kept getting
an email from postgateway@blogger.com saying:

Your message could not be posted because of the following reason(s):
jkirvin.****@blogger.com, Invalid Content Type

I changed SnapperMail to use GMail for my POP3 and my own SMTP server, and
now it works like a champ! W00t!