Choose “Labels” and reactivate “Show in IMAP” for “All Mail” and then navigate back to your inbox.ĩ. Navigate to the settings wheel and choose “Settings.”Ĩ. Go back to your Gmail account within your browser. Choose the “Internet Accounts” selection and delete all of your logged Gmail accounts.ħ. Click “Labels,” and turn off “Show in IMAP” for “All Mail” and then click through to your inbox.Ħ. Click the settings wheel below your account picture and click “Settings.”Ĥ. Use your Gmail credentials to log into your Gmail account within your web browser.ģ. Open the native Yosemite Mail app client.Ģ. Here’s what you should do: First Method Stepsġ. If the aforementioned solution does not help, you can follow this pretty simple workaround, which will also work in Mac OS X 10.9 Mavericks. With this said, issues like this regarding both Google’s Gmail and general exchange accounts have existed since 10.9 Mavericks. If you have an issue like this regarding Gmail in the Apple Mail app within Yosemite, try to de-activate and re-active the “Show in IMAP” for “All Mail” selection, which should fix the issue. This guide will instruct you regarding how to fix the Mac OSX 10.10 Yosemite Gmail bug within the Mail app.