Sending Email Broadcasts

Question

I\'m working on an application that will allow management to send registered users (opt-in) broadcast emails at regular intervals, or based on various other criteria. In any ca

Answer 1

I recently built an application with those same criteria. We do the emailing in-house, and send one email to each recipient.

Do use domain keys signing or be sure to use SPF records for your domain. We didn't do that at first, and were blacklisted by a number of different ISPs. Fortunately, it is fairly easy to get them to unblock you. Most will include an online form you can fill out or an email address you can use in the server bounce message.