You know in GMail, there’s sometimes annoying emails you get from spammers who don’t care about CAN SPAM Act?
Even if you mark it spam, sometimes they keep making it through your spam filter.
There’s a way to block those e-mails (or send them an automated reply to annoy them back).
First, simply check off the e-mails you don’t want to receive anymore then click on More Actions->Filter messages like these.
Then, simply click on Delete It or perhaps forward it to another e-mail of your liking that will auto-respond.
I get hundreds of e-mails per day from spammy Chinese manufacturers. I never open them because they keep sending e-mails that I never asked for.