The only solution is to quit Mail and reopen - which always solves the problem - for a while - until it happens again. All accounts go offline, and Connection Doctor shows repeated reconnects fail with error

But after about an hour of inactivity, Mail loses the connection and cannot reconnect. What happens is, when Mail opens it connects w/o problem to both the IMAP and SMTP servers for my mail accounts (I have 2).

Mojave Mail drops IMAP connections and can't log in I am having nonstop problems with Mac Mail after upgrading to Mojave these problems occur on four different Macs (2 iMacs, 1 MacBook pro 1 Mac air) connecting to Gmail accounts. I am unable to reformat the macbook at the moment until another 2 months or so due to some ongoing projects and I don't wanna risk any thing now. Would like to try one last time to request for help from the community if there is any other options/solutions I can attempt. I've tried to contact apple support and was escalated to the senior tech support, and after many hours of consultation, my final advice from them is to reformat my computer and see what I get. Also verify that the server supports SSL, If it does not, deselect the Use TLS/SSL tickbox in the Server settings tab of Account preferences. In the mail connection doctor, I will repeatedly get 'Could not connect to this IMAP server, Check your network connection and that you entered the correct information in the Account preferences. The only way right now for me to add the emails in, is that I have to install the profile configuration file provided from my email domain provider. Webmails for these 3 domains are working perfectly.Įven if I tried to remove and add the accounts again manually, I will be stuck at the Verifying Server Settings forever, and after 20-30min, it will prompt me 'Unable to Verify Server settings'. I am able to receive mails for the 3 IMAP email accounts, but I could not send out any. My mail servers all failed to connect to 3 of my IMAP accounts, except for my exchange account that is working completely perfect. I'm currently already up to date to the latest macOS Mojave 10.14.4

Apple mail server