That's what I use spamgourmet for. I give out a different address to various sites without fear. The address you give out includes a number which is the numbe

That's what I use spamgourmet for. I give out a different address to various sites without fear. The address you give out includes a number which is the number of emails you will allow them to send to you at first. You can reload that number whenever you want to allow them to send more messages, or you can whitelist the sender if you want to keep receiving messages without it counting down.