Newsletter on Rails

I am working on a few rails projects right now which involve sending out
newsletters to subscribers. I don’t need mailing list functionality
just the ability for the system to send mildly customized emails to a
large list of subscribers. I have a solution right now that just loops
through my subscriber table, gets each subscriber’s email and name, and
then uses Action Mailer to send the newsletter. This works. Well I
thought it worked. According to http://www.myowndb.com/blog/?p=20 this
approach will not work as my SMTP server will get angry if my subscriber
list is too large as a new connection is made for each email that I
send.

The link above provides a solution but I was wondering if there were any
other approaches out there that would work well to enable Action Mailer
to send a whole bunch of people an email.

If it matters at all these projects are currently hosted on TextDrive
though I will probably be moving them to a VPS or dedicated box sometime
in the near future.

Thank you,
Matthew M.
blog.mattmargolis.net