I wish I had bought my own domain when I signed up for Fastmail so I could switch more easily. Their web UI usually takes 3+ seconds to load for me on a gigabit connection which is about the same as Gmail, search also takes 2+ seconds which is definitely worse than Gmail. And they haven't upped their storage limit in 6+ years during which the cost of hard drives has fallen 50% or more.
edit: Bulk moving or deleting items in the web interface can take 20+ seconds! It's not that fast, honestly. But maybe there isn't anything better.
I honestly don’t load it that often - it just sits there in a open tab all day. Viewing, moving, composing messages (esp with keyboard shortcuts) is literally instant for me. I have never noticed it being anything other than fast. Same for their iOS app (which I think is largely a web view).
How many things are you moving for it to take that long?!
I accidentally marked everything in a folder as unread recently and that did take a while, but I did get a very helpful progress bar while it chugged away.
edit: Bulk moving or deleting items in the web interface can take 20+ seconds! It's not that fast, honestly. But maybe there isn't anything better.