Prompts
Marketing

Product update email

Announce a product change to existing customers, with the action they need to take up front.

by Appndo

Tested on GPT-6.1 Sol, Claude Opus 5.5, Gemini 3.8 Flash · Verified Oct 27, 2026

The prompt

Write an email announcing this change to existing customers.

Product:
{{product}}

What changed, and anything customers must do:
{{change}}

Who receives it:
{{audience}}

1. Give three subject lines, each under 60 characters, that say what changed.
2. Write the email in plain text:
   - If customers must act, put the action, the deadline and what happens if they don't in the first lines.
   - Explain the change in terms of what customers can now do, not features.
   - One clear call to action.
   - Under 200 words, in the tone of a person writing to customers they know.
3. List any facts the email needs that I did not give (dates, links, prices), shown as [placeholders] in the email.

Use only facts I gave. Do not invent numbers, quotes, testimonials or benefits.

How to use it

Give the facts plainly, including any deadline or action customers must take. Fill in the [placeholders] before sending.

Example

product
Ledgerly, invoicing and bookkeeping for small businesses
change
New bank connection system. The old one stops working on November 30; customers must reconnect their banks in Settings > Banking or transactions stop syncing. Takes about two minutes. Also: invoice editor is faster and there are 6 new invoice templates.
audience
All paying customers, mostly small-business owners