One of the easiest and most beneficial way I discovered that I can use the AMEX 2X promotion is through using Plastiq.
Plastiq is a bill pay service that allows you to pay your mortgage, taxes, daycare bills, etc. with a credit card. They charge anywhere between 2-2.5% depending on the card that you use so typically you have to get creative to actually get your $’s worth, or unless you’re trying to hit big sign-up bonus spends.
But, right now, Plastiq transactions are actually coded as a small business so you’ll get 2 points for every $ spent. If you use something like the Everyday card, you’ll get an additional 50% bonus (on the base non-bonus points) so you’re getting 2.5 points for every $ spent. Considering that I value, conservatively, every amex point at 1.5 cents you’re getting 1.25% (2.5*1.5-2.5) cashback on paying your mortgage without even leaving the house, buying giftcards, etc.