A few months ago, I came to the realization that a bunch of spam emails were evading my spam folder, because they used an individualization technique that involved including a number in the email address. Here's an example of the email headers:
National Debt Relief Concierge
From:
klite170@klitecorp.com
Your Senior Care Advisors
From:
klite170@klitecorp.com
Fidelity Life Insurance
From:
pila170@pilasoa.com
Consumer Cellular Promotions
From:
jear170@jearbog.com
Letters From Santa
From:
vor170@gudrant.com
And here are some of the addresses in the signature line
Proven Media Group
5155 Blue Diamond Road Suite 102 #1055
Las Vegas, NV 89139
Modex Media
501 South Rancho Dr. Suite D20 #1006
Las Vegas, NV 89106
iBit Media
3172 North Rainbow Boulevard #1125
Las Vegas, NV 89108
So you'll notice a few things:
- All the email addresses have 170 in them. When I started noticing this, they all had 138, then 139, 140 etc. The numbers increment every week or 2.
- All the physical addresses are one of a handful of companies in Las Vegas.
I was able to go into my email settings, and have any emails with "138", "139", etc. go to the unwanted folder. The only problem is over time, I have to update the list of numbers.