gmailimapmacosmail.app
I have 6 different IMAP accounts configured on Mail (all of them for gmail / google apps accounts).
All of them, except one, have a "Synchronize" option in the menu that appears when right-clicking any of the inboxes or other IMAP folders in the left pane.
This one account which doesn't have this option also has occasional major lags in syncing with the server.
ALL of the account settings are identical (including enabling of IDLE).
Any ideas what could be causing this and how to resolve?
Follow these steps:
You will want to make a new mailbox with storage only on the Mac or use the Archive function in Mail to archive an entire folder/mailbox.
The built in help will guide you through the Archive path.
I just make folders "On My Mac" with the year, and then make Q1, Q2, Q3, Q4 folders inside to keep each relatively small - you might only need one folder per year or one folder.
Once you move the message and are comfortable that it's on your mac with attachments intact, delete the original message from IMAP and your quotas will be happier.
Best Answer
Look for it in the Mail--Mailbox--Synchronization
if not there..
Sounds like when setting up that account something went wrong
reset that account
remove it and add it new