Airmail has been around forever, yet it’s one of the most buggy pieces of Mac software that I have had the displeasure of using. Now at version 3, the software still has its share of issues. The biggest problem is their development team. If you go to their support team with an issue, you will be treated rudely. They don’t want to hear about issues with their software, and even if you post those issues on their support forum, those questions will be deleted and go unanswered.