Google has brought out a 'block' feature to its Gmail service which lets users relegate emails from specific people to junk mail hell. If only this was available back in my youth when those annoying "You're going to die if you don't forward this to 10 people" chain letter emails were doing the rounds.
The block feature is being rolled out to Gmail web client users from today and to Android users over the coming week. When you receive an email from someone you never want to hear from again, you can just open the email and select the block feature from the drop-down actions menu (that's where options 'Reply' and 'Forward' are located).
Once you do that, any emails received from that specific email address will be sent straight the Junk Mail folder. You can always unblock an email address through 'Settings' in Gmail.
Google is also implementing the Gmail 'Unsubscribe' option to Android devices so you can easily opt out of those pesky newsletters you don't even remember signing up to. [Via Google Gmail Blog]