I've recently given up on running my own email server and changed to postmark. The deliverability has gone up, but most importantly I spend less time managing it.
Postmark would cost us around $10k a year. I spend maybe 10 to 20 hours in a year dealing with the server and deliverability issues. It's not clear to me that Postmark could improve our deliverability much either, as it is already pretty good. How much did it improve for you?
