Send loyalty letter after order completion to repeat buyers

You miss milestone mail for repeat buyers when completed orders lack a verified address, causing manual lookup and delayed outreach. It queues mailed letters and logs sends same day.

Overview

Stop relying on manual lookups to reach repeat buyers — this flow detects completed sales, resolves missing addresses, and sends a printed milestone letter the same day. It removes manual steps and guarantees a logged outreach for timely follow-up.