How many versions of a template are retained?

All versions are retained while your workspace is active. There is no automatic pruning of old versions.

Can I compare two versions side by side?

A diff view for template versions is on the roadmap. Currently you can browse the version history and restore any previous version.

No. A rollback changes which template version is used for new events. Emails already queued or delivered are not affected.

Workspace-level environments are on the roadmap. Currently you can use a separate staging workspace for pre-production testing.

Every template change is versioned. See the history, roll back instantly, or keep multiple versions in parallel — without touching your codebase.

A template was updated. Open rates dropped. There is no way to see what changed, when or who changed it.

If templates live in your repo, a rollback is a commit and a deploy. If they live in a provider UI, there is no rollback at all.

A poorly tested change to the payment failed template goes live immediately, affecting all users until discovered.

Open rates changed after a deploy. Which template changed? Which version is now live? No easy answer.

Template edits are non-destructive. The previous version remains available and can be restored instantly.

Revert to any previous version without a deployment or a code change. The change takes effect for new events immediately.

Each email delivery log records which template version was used. Cross-reference version changes with delivery metrics.

Future: require a review before a new template version goes live, for teams with strict email quality processes.

How many versions of a template are retained?: All versions are retained while your workspace is active. There is no automatic pruning of old versions.
Can I compare two versions side by side?: A diff view for template versions is on the roadmap. Currently you can browse the version history and restore any previous version.
Does a rollback affect emails already in flight?: No. A rollback changes which template version is used for new events. Emails already queued or delivered are not affected.
Can I have a staging version and a production version of the same template?: Workspace-level environments are on the roadmap. Currently you can use a separate staging workspace for pre-production testing.

Every template change versioned. Roll back instantly. Delivery logs linked to each version.