Spammers...I hate spammers...
Here's chat transcript between me and one spammer:
Me: Hello. I want to order e-mail delivery (1 milliard messages). How much will it cost?
Spammer: $$$
Me:Can it be sent on one specific e-mail?
Spammer: Excuse me?
Me: I want one milliard messages to be sent on one specific e-mail.
Spammer: You want to overload/block up this email?
Me: Yes, exactly.
Spammer: OK
Me: Can you send 10 messages per second?
Spammer: Yes, why not?
Me: OK
Me: And how can I receive evidence that these messages are delivered?
Spammer: Well, I think this person will tell you about it.
Me: OK
Me: And I want to add few words to these messages, which will be sent to this e-mail. Will it be possible?
Spammer: Yes.
Me: Great. So now you send 1 milliard messages (10 messages per second) with the following text "Kill yourself, save the world, fu#@ing SPAMMER!!!" on YOUR EMAIL!!! After all messages are received, let me know. And stop sending Spam to me!
After this I never received spam from this address again