A request can arrive anywhere
Email entry, with the action boundary in view.
An AMP-for-Email part lets the recipient choose an allowable next step inside the message before following the HTTPS review link. HTML and plain-text fallbacks carry the same context.
text/x-amp-html
Interactive AMP email
text/html
HTML fallback
text/plain
Plain-text fallback
Review boundary
What this fixture demonstrates
Entry
A fictional, opaque demo context arrives as an email fixture.
Next
The CTA opens a partner-owned HTTPS action-chain preview for review.
Approval
Every consequential step stays staged until the person explicitly approves it.
This experiment does not ingest inbound mail, send mail, invoke mailto, or claim that email invokes WebMCP. The email is only a presentation surface for a user-triggered link.