Preflight and Quality
Understand Email Preflight
Learn what preflight checks and why it gates key actions.
Who this is for: Everyone shipping email through Memo.
Last updated
Preflight is a deterministic, server-authoritative quality engine that runs on your compiled email output. It checks metadata, variables, links, assets, brand and footer rules, content, HTML and size, accessibility, and rendering.
How findings work
- Blocking findings are enforced on the server and must be resolved.
- Warnings are surfaced in the UI but do not block.
- Quality profiles let a workspace tune non-critical thresholds; core checks stay immutable.
- Passing status is tied to a specific version’s content hash and rule-set version.
Preflight gates approval, export, and test send. It fails closed: if it has not passed for a version, those actions are blocked.
Expected result
You understand what preflight checks and why it matters.