I doubt this will make any backlog on the product roadmap, but you miss 100% of the shots you don't take, so:
I would like a method to understand within Velocity if an email has been marked as operational; today, there is no consistently accurate way to gather this information from the header or other parts of the message (e.g., check against Unsubscribe HTML).
The main use case for this is compliance in countries where you are legally obligated to note if an email is an advertisement, namely China. This requires that emails can be properly marked in the subject line/body as appropriate (e.g., "<AD>") without affecting operational emails.
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