The above image displays the SpamStopsHere statistics for one of my clients. This is about four-and-a-half days of email, which is about 300,000 emails a day for a company of 15 people. Note the 99.96% filter rate.
They’ve been on SpamStopsHere ever since Matt Smith turned me on to that service three years ago. I signed them up, and spam instantly stopped. For the last three years, their inboxes have been essentially spam-free.
Alas, SpamStopsHere has notified us that this client is using an entire server on their network to filter email. Since the client doesn’t want to pay for a dedicated server, he’s considering the nuclear option and just changing his domain name.
How does it get this bad? They’ve had the same email addresses for 10 years, and had them in unencrypted mailto links on their Web site for five years before they hired us.