Gmail has become a ubiquitous service ... you will see a message – Authentication succeeded. You can now forward messages. If you close this window, you will see this- Here, you can enter ...

Click Continue. You'll see a confirmation banner from Proton about the forwarding process. Your upcoming Gmail messages will ...

Your Gmail inbox is almost full -- or worse, it's already full and you can't receive new messages. Now what? Try this hack to clean out your inbox in one go.

Spam messages are automatically deleted every 30 days, so you can let Gmail handle that, or go into the Spam folder yourself after transferring your mail and delete or forward those messages.