Here is how to troubleshoot Gmail Label Sharing issues: Log into your Gmail account at https://mail.google.com. Go to your Gmail settings, select “Forwarding and POP/IMAP” (the direct link should be https://mail.google.com/mail/u/0/#settings/fwdandpop).Please verify the following: Enable IMAP should be selected. Do not limit the number of messages in an IMAP folder should be selected: Save the above settings. […]