Last week, I did a home insurance quote with my auto insurance provider since I’m about to move out. I didn’t shop around for a better rate, since I get a multi-line discount if I have my auto and home insurance with the same company (a whopping 5% off), and because it only really costs $100/yr (complete with watercraft protection yay). I did what I usually do and put in a [insurancecompany]@mydomain.com email.

Interestingly, since then I’ve gotten two spams from rival auto insurance companies in my email saying to buy from them instead. That’s two more than I have ever received. Even more weird is that they came in on my myname@gmail.com email AND through the gmail spam filters. How is it that these auto insurance companies came to know that I was doing insurance quotes, and how did they know my other email address?