MarketingSandbox · bring your own key

Test “Customer Win Back Email” with your own key

Paste an Anthropic, OpenAI, or OpenRouter key. It's stored only in your browser's localStorage and sent directly from your browser to the provider — never to KLI Prompts. We have no backend that can see it.

How this works (honestly)

Your key lives in localStorage on this device only.
The HTTP request to the LLM goes from your browser straight to api.anthropic.com / api.openai.com / openrouter.ai.
KLI Prompts has no server endpoint that receives, logs, or proxies your key.
Clear it any time — there's a button below.

Step 1 · Provider

Recommended for this prompt: any · temperature 0.4

Step 2 · Your API key

Anthropic API key

Saved to localStorage on this device. Never sent to KLI servers.

Model

Temperature

Step 3 · Fill the variables

Customer Name*

Product Name*

Inactive Duration*

Incentive Part*

Tone Part*

Final prompt (sent to anthropic)

Write a customer win-back email for the following details:
- Customer name: {{customer_name}}
- Product name: {{product_name}}
- How long they've been inactive: {{inactive_duration}}
- {{incentive_part}}
- {{tone_part}}

Include a subject line starting with "Subject: " on the first line, then the email body. Be concise and compelling. Do not include any commentary outside the email itself.

Output — will stream here

Nothing yet. Fill in variables and click Run.

Prompt slug: customer-win-back-email

Prefer copy-paste? Back to the prompt page →