Hi {{firstName}},
You emailed us in May asking for {{requestedFeature}}. We built it.
[Try {{requestedFeature}}]
If your needs have changed and this is no longer useful — also fine, but I wanted to close the loop.
— {{senderName}}Closing the loop on feature requests is a high-leverage re-engagement move. Reference the specific request (month, ideally exact phrasing) — generic 'you asked for' falls flat. If you don't actually log feature requests, this is the year to start.
Drop your draft into our editor. One anonymous run, no signup required.