Definition
AMP date and time features render current or relative values inside the email, such as live countdowns or current timestamps, updating without the recipient reopening the message.
They depend on AMP for Email, so a static timestamp fallback is required for non-AMP clients.
Dynamic time elements such as countdowns create genuine urgency because they update in place, showing the recipient the offer is still live. They work only in AMP-capable inboxes, so a static timestamp must always be present. Real, verifiable countdowns build trust while fake ones erode it.
Using Dynamic Time
Countdowns and current-time displays create urgency in place.
Always provide a static fallback value.
Best Practices
- Use live-list or datetime helpers for dynamic values.
- Provide a static timestamp fallback.
- Test in Gmail, the main AMP email supporter.
- Keep countdowns relevant to your offer.
- Avoid relying on dynamic time for critical info.
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Related Glossary Terms
Above the Fold in Email
Above the fold in email refers to the content visible to a recipient before they scroll, a critical area for first impressions and primary calls to action.
Accessible CTA (Email)
An accessible CTA is a button or link coded with sufficient colour contrast, visible focus states, descriptive screen-reader text, and a minimum touch target of 44×44 pixels.
Adaptive Design
Adaptive design in email uses predefined layouts that adjust to specific device or client widths, rather than fluidly resizing to every possible screen.
AI-Generated Content in Email
AI-generated content in email is copy, images, code or subject lines produced by artificial intelligence tools to speed up campaign production and testing.
Alt Text
Alt text is the written alternative to an image in an email, displayed when images are blocked, slow to load, or consumed by screen readers.
AMP for Email
AMP for Email is a technology that allows interactive, dynamic content to live inside an email message, enabling forms, carousels and live updates.
Frequently Asked Questions
With AMP, yes, by refreshing or computing client-side. Dynamic time elements such as countdowns create genuine urgency because they update in place, showing the recipient the offer is still live.
Typically yes, for in-place updates. They work only in AMP-capable inboxes, so a static timestamp must always be present.
Subscribers see the static fallback time. Real, verifiable countdowns build trust while fake ones erode it.
Countdowns can add urgency when genuine. Dynamic time elements such as countdowns create genuine urgency because they update in place, showing the recipient the offer is still live.
AMP-capable inboxes, chiefly Gmail. They work only in AMP-capable inboxes, so a static timestamp must always be present.