Match the message to the stage
A first reminder, promise follow-up and formal notice serve different purposes and should not be treated as interchangeable templates.
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Chasing payment
Make every chase clear, factual and traceable.
Use a consistent sequence: verify the balance, send a factual reminder, record the response, track any promise and decide the next review date. Avoid threats or claims you cannot support.
Keep the source
Preserve the exact sent message and reply rather than relying only on a summary.