There could be immense issues that are responsible for Gmail Not Receiving Emails. In the below section, we have listed a couple of the most common reasons that lead to such an error:
Gmail account storage may be full.
Most probably, the Firewall blocks emails.
Email Filters are applied.
Gmail servers are down.
In order to receive emails frequently on a Gmail account, try accessing Gmail on a different browser. Furthermore, you can delete unnecessary emails on Gmail or clear up some space on Google Drive or Google Photos.