Rather an old book in computing terms (published 1999), but the advice is still very relevant. Easy to go back and revise once you’ve finished – chapters are thoroughly indexed, there are tips, a quick reference card and checklists.
MailChimp have just announced that Mandrill, their transaction email service, is being discontinued as a standalone product over the next couple of months. In future all accounts will need to be tied to a MailChimp paid plan.
There are various options should you decide to take the opportunity to migrate elsewhere (MailChimp themselves mention Amazon SES) but I’d like to put in a good word for Postmarkapp; they’ve been around for ages (the company is Wildbit who also make Beanstalk), the site is nicely presented but simple and easy to use, they’re very open about how they work and they’ve launched an excellent Templates featured which I tried a few months ago.
Update 27 Feb: