Mails open very slowly

It takes a long time to open mails. When I click a mail, it opens immediately, then closes, and the wait icon appears for some time before the mail contents reappear. I cannot find a setting for this. Anybody have a solution?

the problem is that the picture is loaded, but some part is missing so it starts to load from the beginning. Now, we are working on the fix, which will be available in one of next updates. Unfortunately, I cannot give you any exact time frame - it is high on our agenda, but there are quite a lot requested features and improvements from our customers that needed to be targeted as well. Thank you for your understanding.