I use K9 with Fastmail. I don't like how difficult it is to search. It seems to involve some complex process of navigating back through the mailbox (from unifie

I use K9 with Fastmail. I don't like how difficult it is to search. It seems to involve some complex process of navigating back through the mailbox (from unified Inbox to the actual Inbox of the server) and then running the search locally and then pressing back some unknown number of times until a "send query to remote server" toolbar button pops up, and then I press it and it runs the search remotely. Since it only caches a small proportion of my inbox, I always want to send the query to the remote server - it's likely that I could find the item by scrolling faster than I could find it by searching if it's in the cache. I'd be happy if that button was in any search view instead of having to do the weird and complex dance. I am willing to tolerate this issue because I don't search all that often. In general, a buggy FOSS app is better to me than a commercial app because it is unstable at any given time but relatively stable over time, whereas commercial apps tend to be stable at any given time but unstable over time.