AMEX Offers are by definition YMMV, since we don’t know if AMEX makes these offers available on every credit card account or a subset of the accounts. The easiest way to find out is to logon to your AMEX account and look at the Offers section below the “Recent Activity”.

Bubbling around at the moment are two pretty good offers if you like to make general purpose purchases, especially for homeowners. As you can see in the screenshot below…

… you get $10 back on a $40+ purchase at Orchard Supply Stores (or their website). Separately, you get $10 back as a statement credit on a $50+ purchase at Big Lots brick and mortar stores (not their website).

It is important to note that while the offers expire by the expiration date shown there, the window to sign up for the offer (the simple task of pressing the “Add to Card” button) is often smaller. Some of these offers have a limited number of activations, so if there’s an offer you may need, add it to your card as soon as you see it.

If you have an American Express credit card with Membership Points (not the Blue line of cards), they have a new promotion running under the “AMEX Offers” section that went live on March 22 in 2016. You earn 2X membership points on Amazon.com purchases made with the card. The promotion is good until 7/31/16.

You must manually opt-in to this promotion. Even though it expires in four months, the window to opt-in is typically small. In other words, if you don’t opt-in, the offer won’t be shown in your account for four months. In other words, if you think you may use it, add it to your card the next time you login to your account!

Screenshot of that with the important bits highlighted can be found right below:

If you have an American Express credit card, logon to your account and check the special offers. One of the latest making the rounds is a promotion that gets you $10 back as a statement credit if you make a purchase of $30 or more at Exxon Mobil gas stations by 12/31/15. You have to manually add this offer to your credit card.

Once added, this offer expires 12/31/15. However, if you don’t add it to your card, it can disappear from the available offers at any time. This is because of two restrictions: there is a limited number of sign-ups per offer, and the offers may also have a limited runtime of their own regardless of the sign-ups. So, to summarize, when you see an offer you may perhaps use in the future, add it to your AMEX card right away!

TIP
If you have multiple AMEX cards on the same account (in other words, the same login account), pay attention to which account number you add the offer. It will only work if you use the card with the offer on it. Otherwise, no luck and customer service won’t fix it for you.

Note also that a lot of the offers are only shown to a subset of their cardholders. So you won’t have available to you every single offer you see mentioned on the internet. How AMEX decides to offer what to who(m), I do not know, it’s probably part of their “secret sauce” targeting system.