I have a connection to a gmail account which blocks IMAP but for some reason emclient does get through (other clients donot). It however shows errors a lot and I just want to be able to not show the error window. How can I turn this off?
eM Client works very well with GMail, so you should not be getting any errors.
However, you can turn off the window by going to Menu > Tools > Settings > General > Operations Window. Untick Show window when an error occurs.