If you're using Gmail IMAP and Outlook isn't syncing properly, this fix may do the trick.

How to fix Gmail if you're not receiving emails Clearing your inbox or Google Drive, changing your filter settings, and double-checking your internet connection can all help solve the problem.

We identified the most common Gmail problems users experience and how to fix them. Common Gmail problems summarized Gmail issues are more frequent on mobile devices.

If you use Gmail as your email backend but prefer a good old-fashioned desktop email client for handling your day-to-day email, you're probably aware ...

To fix this, just select Gmail's Sent Mail folder, then go to Mailbox > Use This Mailbox For > Sent in the menu bar. Repeat this process for Trash and Junk, too, to make sure all your folders sync up.