I turned Gmail into a lightweight task manager and finally ditched my to-do apps — here's how

Open the Tasks panel from the right-hand sidebar, drag an email into it, and Gmail instantly turns that message into a task.
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Google says it is ‘gradually rolling out’ option to change your @gmail.com address

Google says on a support page that it is "gradually rolling out" a new change allowing users to change their Gmail address.

This Is the Easiest Way to Filter Junk Out of Your Gmail Inbox

Gmail is the most popular email service, and has a lot of tools for managing your inbox. This is the best way to do it.