For the past decade I have used Thunderbird as my email client of choice, but it appears that this time has come to an end. They have unceremoniously broken the only addon I use. In addition, I have discovered that
> characters do not count as “quotations” and will be indented by one space in the actual sent text. This breaks manually edited quotations and makes it look like the entire body of the email is one quote, even if there are inline responses. Unfortunately, this decline in quality seems like the new modus operandi at Mozilla (especially judging by the recent changes they’ve made to Firefox).
Thus, I am in the market for a new email client. So far I have looked at Evolution, which seems like it can do 90% of what Thunderbird does, and also seems to have a much nicer philosophy wrt user customization. The only problems I encountered were that it hangs on startup unless the main thread is stopped in gdb and resumed (wtf?), and that it lacks a “simple HTML” mode for viewing HTML emails without colors and whatnot. I also looked at sup with offlineimap, but I’m not very impressed by the setup. The lack of integration between the fetcher and the viewer makes for poor UX because of the difficulty of configuration and lack of flexibility. sup also crashes on startup (ugh).
What email client do you use? Does it have the option to integrate an external editor like vim? What is the threaded interface like? How does it display HTML emails? What is the filtering system like?