We wanted to send out a "Seasons Greetings" mail to our customers. I asked why we couldn't just use Office's mail merge feature, and it turned out that we wanted a custom "from" for each recipient, so that every customer would get the email from his sales rep. This requirement was later dropped, at which point I realized that Outlook doesn't mail merge for email. You can only mail merge if you're going to print, fold, and post your snail mail. Ugh!
Of course we wanted to send HTML mail with colors and pictures, and of course I was offended and wanted to secretly make it multipart/alternative. This gave me a reason to learn how to use some new PEP modules, mostly Email::MIME and Email::MIME::Creator. I managed to write a simple mail merger for multipart mail in just a few lines of Perl. It's not fantastic, but it's reusable for
I make a directory with just a few files:
addrs - a tab-delim list of salutations and email addresses
part.plain - TT2 template of the plaintext part
part.html - TT2 template of the html part
The directory should really store the sender and subject in a file; it'd be a simple use of IO::All to do so; I'll get around to it next year.