Google is launching a wonderful update for Gmail that grants you to block specific mail and user with an eye blink.
This feature is rolling out from today on web and will be execute on android devices up to next week. Once selected Emails has blocked, just go to your Spam Folder & delete your older mails yourself. You can easily unblock them in settings.
In addition, Android users can now unsubscribe from mailing lists from a mobile device too.
While the block does not stop emails being received, you can set up multiple filters to keep cream mails in your inbox.