We've expanded the EmailStatus enum to include the following new statuses:
throttled - The email is being sent out slowly to ensure deliverability.resending - The email is being resent to subscribers by Buttondown's systems in order to make sure all subscribers have received it.transactional - The email is a transactional email used by a core workflow in your newsletter or Automations, and is not visible in your web archives nor sent out to subscribers.The first two statuses do not represent any changes to Buttondown's existing logic; we're not changing how we throttle or resend emails, just surfacing when we do so in a more legible way.
The third status will (though does not yet!) represent a shift in how we approach things — specifically in how we approach sending automation-borne emails. No action will be required from you, but we're going to shift away from the current model of allowing "bespoke" emails defined within an automation towards a contract where all automations which send emails must reference an Email. (This doesn't represent a change in functionality — it's mostly internal plumbing — but is worth calling out.)