Scope widened since this decision (2026-09-08). Resend now carries the whole guest-facing mail family, not only the waitlist: the booking magic link, the guest agent’s mail, and, since 2026-09-09, the payment request (Payment request rides the Resend template, LUCI-232). Postmark is the employee-facing maintenance thread only; SMS stays on Twilio. The current provider posture lives on Email Services; the entry below is the dated 2026-05-11 waitlist decision, kept as history. The adopted email-service boundary of 2026-05-11 assigned outbound waitlist welcome email to Resend and kept Postmark focused on inbound operational/system email intake. Provider and runtime state for the waitlist path were not reverified on 2026-08-12 or 2026-09-10.
Decision
The adopted decision assigns:
This keeps waitlist email lightweight while preserving Postmark’s existing role in Lucia’s operational intake stack.
Decision and Evidence Status
The 2026-05-11 milestone record states:
Those entries are dated historical evidence. They do not prove the current source, provider configuration, or delivery state.
Rationale
The recorded rationale favors Resend for this narrow outbound use because it is:
This is not a replacement for Postmark’s operational email role. The 2026-09-08 ruling extended the same Resend family to every guest-facing send; see the note at the top.
Service Boundary
Recorded Ownership Contract
The 2026-05-11 record assigns:
The public outcome recorded for that milestone is:
Storage design, request and response shapes, persistence ordering, provider configuration, and audit metadata belong to the owning source and provider evidence. They are intentionally not specified by this public canon page.
Truth-State Requirements
Do not claim:
unless supported by current source, provider, or delivery evidence.
The dated implementation record was reflected in:
