Installed yesterday looking for another IMAP client. (I've use and GYAZ and been pretty satisfied for some time now.) Here are some quick comments. They may be off, but I treated this pretty much like a complete newbie who wanted to get up and running quickly.

-- Apparently a single cllick selects a mailbox. Wasn't able to tell. A slow response made it difficult to tell.
-- It feels like there is no default caching of headers. Again, slow.
-- Moved email from IMAP mailbox to local folder ... and the message simply disappeared. Not in trash. Clicked on folder and the header on main window says "no window selected."
-- SMTP config is difficult. Must "disconnect" from server to edit account.
-- No help yet

Feels like this is not yet ready for use. Too bad.