On your laptop or computer, FlowCrypt allows you to view encrypted email directly from https://mail.google.com
Click on the newly received message:
The message will be automatically decrypted, just like when viewing any other email:
Depending on your settings, you may be asked to enter your pass phrase first.
Next, take a look at Send and receive overview
If you are having trouble opening encrypted emails with FlowCrypt, see Cannot read email.