AMP is — well, it's two things, or at least a brand for two different things:

• A framework for optimizing web pages, in particularly for mobile devices and SEO;
• A framework for email (cleverly named "AMP for Email"), which is a whole different thing.

Both of these initiatives were initially championed by Google and now technically owned by OpenJS.

AMP for Email allows senders to include more interactive content (things like carousels, accordions, and forms) within the body of an email.

That said, as of 2024, AMP for Email has not seen much adoption in the US or Europe.