I'm using mu4e for email and I really like it. The only time it annoys me is when I'm switching buffers and I want to see a list of suggested buffer names in the echo area / minibuffer, because mu4e insists on writing
[mu4e] Retrieving mail... / into the echo area. In order to refresh the list of buffer names I must edit the now invisible text in the minibuffer, but it only flashes for a moment as it is again overwritten by mu4e's notification.
I like this notification when I don't use the minibuffer, so I don't want to disable it completely. Is there a way to prevent it from appearing when I'm actively using the minibuffer?