As a long-term Thunderbird user, it saddens me to see the direction in which this client's development is heading, and I am seriously considering making a change. There are a few things I am discontented with, like the rather amateurish look and feel of the app. On top of that, there are many basic client features missing, such as templates (drafts are horrendous) and send later functionality (right now, I think I'm using about 2 add-ons, each of which is awful to use).