
Apple recommends these next steps when you can’t send or receive email on your Mac, so it’s worth trying out. With the two basic steps into solving the Gmail not showing emails in Mac mail issue out of the way, let’s look at more advanced troubleshooting steps. If the messages are all there, then the problem is with your Mac Mail app and not with your Gmail account. You can also try accessing the Mail app on your iPhone, and check if all of your Gmail messages are showing up.


The first thing you need to do is, of course, restart your computer. There are several steps that you can take to fix issues with Gmail messages not showing up in your Mac Mail app.
