[PLUG] question on blocking spam mail

[American Citizen]

Ever since I sent electronic mail to my insurance company last July, my 
mailbox is still being flooded by spam mail. Just recently 53 spam 
emails hit in just one day.

If you examine the headers, they all appear to be coming from some 
computer network of people who have intimate knowledge of email servers 
and how to take advantage of the loop-holes in the email protocols.

Is it worthwhile to try to contact Google, since it is google which is 
okaying the forward on this spam, and ask them to start blocking?

My current email program (imap) is NOT blocking the incoming content, 
since google did put them into the SPAM folder, but occasionally a good 
email slips into this batch, so I cannot simply choose to auto-erase the 
content of the spam folder.

Your thoughts?

Randall