Gmail is one of the best email service platforms worldwide. However, users often face some problems while forwarding emails through the app. In this article, we have mentioned the possible fixes to the Gmail forwarding not working issue. The primary reason for this problem is that the email server blocks the emails or filters them as spam. Check whether you are entering a verified and correct email address. The email address of the receiver should belong to the same domain as the sender. You can also enable the auto-forwarding option and check whether the issue is resolved. Check the filter settings of your account. Make sure that configuration settings, like POP, and IMAP are all in order. Finally, check the connectivity of your internet. A slow internet speed can cause such a problem.