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Deliverability Letter

Version

A version is a specific saved state of an email or template. It lets you compare different drafts in tests and return to a known good setup if new changes do not work.

A version is just one specific draft of an email. You might change a subject line, tweak the layout, or update the copy, and that new save becomes its own version. Your email tool stores these versions so you can keep track of what changed over time.

Versions matter because they make testing and fixes much easier. In A/B tests, each variation you send is a separate version with its own results. If a new version hurts opens or clicks, you can quickly switch back to the one that worked better.

As a habit, give each version a clear name that describes the change. For example, you might name a version "Short_subject_line_version" or "Holiday_template_update". This makes it simple to see what you tried and which versions drove the best results.