on Mac client - is there a way to repair

Up until 2 days ago all worked fine. Now, when I open the client I get new messages (imap - google) but the content of messages is empty. No further synching takes place (though I have it set for every two minutes).
If I quit and restart I get new messages and the content of the previous messages now shows but not the content of the messages that just downloaded.
ANything I can do besides contacting support?

Right-click on the All Mail folder and choose Properties > Repair.

Seems to be doing the trick - at least in the short term. Thanks.

THank you - that seems to work!