However, there have been incidents of Mail reporting the error code: 0x80070490 – and the solution was to enable IMAP within Gmail. The process is actually quite straight forward, but we’ll make sure you get it right the first time :)Ģ021 Update: Theoretically, the Mail app in Windows 10 doesn’t require you to enable IMAP or POP within Gmail itself. This guide will take you each step of the way through setting up your Gmail email address in the Windows 10 Mail app.