Microsoft Store Select Email Subscribers: $5 Microsoft eGift for Free

Steps:

Check your account for an email titled "Your chance at a spring surprise awaits"
Scroll down and then click the area in your email that says "Surprise - free gift Click to see if you won"
Scratch the area on the webpage to reveal if you have won and then press the Redeem Now button.
You will receive a $5 eGift Card Code to redeem on your account.