When to use this email
A customer has raised a complaint and expects a real response
You need to investigate before you can fully resolve it
You want to defuse frustration without being defensive
The issue matters enough that the customer deserves a timeline
Tips for making it yours
Acknowledge the specific complaint, not a generic "your concern"
Skip the defensiveness. Take it seriously before you explain anything
Commit to a follow-up date and keep it, even if there's no answer yet
Tell them you'll reach out so they don't have to chase you
