Structure
Sentence 1: Acknowledge. Their concern is real. Don't hedge.
Sentence 2-3: Own the action. First-person. What you'll do. Tonight or by a specific time.
Sentence 4: Deadline. When they'll hear back with an update.
Optional: Context. Only if useful. Never as an excuse.
Example
Illustrative example. Names are fictional.
Sam,
You're right. The migration broke a workflow we should have tested. I'm on it tonight, pulling in the senior engineer who shipped it, and I'll be on the call myself.
You'll have an update tomorrow morning, and a fix this week. If we're not on track Tuesday, I'll call you directly.
Alex
Why it works
Acknowledgment first defuses the temperature. First-person ownership ("I'm on it") signals seniority. Specific deadline turns abstract anger into concrete patience. Promise of a call if you miss the deadline closes the loop on trust.
Let Pranan adapt this to your voice
The template is a structure. Pranan fills it with your sentence rhythm, vocabulary, and tone for the specific recipient.