I have same issue on my iMac 21" with macOS sierra.. the app needed more than 5 minutes to load the new messages... I am so angry.
I have cleaned all caches, but there is no huge effect after I restart the OS and the app. Stil need long time to load new message. I am thinking to use other email clients now.
I have same issue on my iMac 21" with macOS sierra.. the app needed more than 5 minutes to load the new messages... I am so angry.
I have cleaned all caches, but there is no huge effect after I restart the OS and the app. Stil need long time to load new message. I am thinking to use other email clients now.