How Junk Mail Makes Me Money

I make several hundred dollars a year, at least, in cash and goods off of junk mail. In September alone, I made $550. How? By actually reading it and taking advantage of legitimate offers. There are so many promotions giving financial incentives that, to me, it is worth it to pay attention. I literally read almost every piece of junk mail (both snail mail and email) to see if there are any interesting deals. 

For example, my health insurance sent out this email:

Is it a terrible email? Totally but $250? From my health insurance? Tell me more.

As it turns out, all I had to was enroll in a simple health and wellness program that asked me to get an annual physical done (something I do anyway), complete some online tests (that took me 20 minutes), and submit a form to their (admittedly horrific) platform. 
​Cool. Done. +$250

​Later I go this email:

$250 from a bank? My husband and I both have "loans" from Citizen bank because of our upgraded iPhones (most people who purchase a new iPhone are allowed to take a 0% interest loan for the lifetime of the iPhone loan). So I called. Turns out, all I had to do was open a bank account, deposit $500 and make a monthly deposit ($1 is sufficient), and after 90 days, $150 would be deposited into my account ($250 is for business clients). After the money is received, I'm allow to withdraw and close the account at no penalty. 

Cool. Sounds great. Jeff and I both signed up. Took us 30 minutes. 
+$300

​​Total earned since September 1: $550. 

New offers come in all the time, ranging from money towards groceries (like from HelloFresh, Fresh Direct), promo codes for $10 or $15 off an order (Google Express does this every so often), to straight up cash bonuses.  So before deleting or tossing out that junk mail, read it quickly to see if the offers are worth the effort. 

What are your favorite junk mail offers you get? What has been your biggest savings via an mail or email promotion?