Purpose-Classified Lanes Keep Transactional Mail Ahead of Bulk Mail

Context

Transactional and bulk mail share account capacity but have different urgency.

Decision

Purpose classification selects two delivery lanes, reserving forty percent for transactional mail with borrowing and limiting Marketing to sixty percent plus a quota brake.

Alternatives Considered

One backlog could delay urgent mail behind bulk campaigns. Workspace fairness requires the open allocation policy rather than an implementation assumption.

Consequences

Marketing requests supply subscription and unsubscribe information. Capacity waits create delayed work without spending the provider retry budget. Current lane allocation does not guarantee fairness among workspaces.