Component Support and Fallbacks Reference
Interactive components make an Edition respond to a subscriber without leaving the inbox — voting in a poll, expanding an accordion, stepping through a carousel. Because mail clients vary in what they allow, every component ships with a fallback: a static version that renders when the interactive experience is not supported. This page is a quick reference to where each component renders and what its fallback shows, so you can design an Edition that works for every subscriber.
Support depends on the subscriber's mail client and version, not only on the component. Treat the table below as a general guide and always confirm with a live test send before you Broadcast — (confirm the exact steps in your account).
Reference
| Component | Typically interactive in | Falls back to | Notes |
|---|---|---|---|
| Poll / vote buttons | Apple Mail, iOS Mail, many webmail clients | Static options linking to a hosted landing page | Fallback vote still records the response |
| Survey (in-email) | Apple Mail, iOS Mail | Static questions linking to a hosted survey | Partial answers may complete on the landing page |
| Image carousel | Apple Mail, iOS Mail | First image shown as a static hero | Choose a strong first slide |
| Accordion / show-hide | Apple Mail, iOS Mail | All sections expanded and stacked | Keep expanded length reasonable |
| Countdown timer | Most clients (animated GIF) | Final-state or static image | Set a sensible end-state image |
| Hover / rollover effect | Desktop clients with hover support | Default (non-hover) image | Never hide key content behind hover |
| Add-to-calendar | Broad (link-based) | Standard link to a calendar file | Works almost everywhere |
Values above are representative placeholders; actual behaviour changes as clients update. Verify current support in your account.
Notes
- Design fallback-first. Build the static version so it stands on its own, then layer the interactive experience on top. No subscriber should see a broken or empty block.
- Responses are captured either way. When a component falls back to a hosted page, the subscriber's action is still recorded and appears in your reports.
- Dark mode and image blocking can affect fallbacks independently of interactivity — test both.
- Always test before Broadcast. Send to a range of real clients (desktop, iOS, Android, webmail) to confirm the interactive and fallback paths both look right.
Related
Canonical terms: Author, Edition, Folder (Project Folder), Broadcast. See the Glossary.