- Supported: implemented and available without an additional provider-validation qualifier.
- Validated: implemented and manually verified against the provider.
- Preview: implemented, with provider validation or production gating still in progress.
- Planned: a design target that is not available yet.
- Not supported: unavailable in the current implementation without ruling out later adoption.
- Not planned: outside the current product direction for that provider.
- N/A: the feature does not apply to that platform.
Inbound media
See Media and attachments for the shared payload and lifecycle
model. Provider pages for Email, Slack,
and Telegram Bot describe their exact support and limitations.