Accept and send association e-mail
What It Does
A lane worker receives an association communication request.
The Flow
When Something Fails
The hop rows identify each retry boundary, any state left behind and the available observer. An existing request outcome bypasses rendering and resumes stored messages; guarded claims prevent concurrent live sends. One queue item is handled per invocation; sending ambiguity permits another claim after fifteen minutes.
Open Design Questions
Protection can withhold every recipient. The default-on exhausted-message retry permits eligible first-receive redrive. Lane capacity and retry backoff can defer the remaining draft messages.