Search works really well for me. Definitely reveals a less aesthetic side of Thunderbird but it works!

A works to archive messages btw, I'm not sure about a shortcut for labels though.

It has the most powerful search of any email client I've used. That was one of the reasons I switched. What issues have you had?

In all fairness, my usage is still minimal at this point. I’ve only searched a couple of times, but the thing I needed popped right up. Maybe my experience will change over time.

What a weird thing to read. I open my work's email in thunderbird because the search is so good. Outlook is really slow when searching for something and so so tedious.