What this automation does
When a customer sends an email to your support inbox, this automation reads the email, understands the intent, drafts a personalized response using your company's knowledge base, and either sends it automatically or queues it for human review.
This works best for businesses receiving 20 or more support emails per day where most questions are repetitive — shipping status, return policies, account issues, and product questions.
Tools you need
- Gmail or email provider: Where support emails arrive
- OpenAI API: GPT-4 for understanding and drafting replies ($0.01-0.03 per email)
- Zapier or Make: Connects Gmail to OpenAI and sends the response
How to set it up
Step 1: Create a Zapier zap triggered by new emails in your support inbox. Filter to only trigger on emails from external senders (not your own team).
Step 2: Add an OpenAI step that takes the email subject and body. Include a system prompt with your company FAQs, return policy, shipping info, and tone guidelines. Tell the model to output both a draft reply and a confidence score from 1-10.
Step 3: Add a conditional step — if the confidence score is 8 or higher, send the reply automatically via Gmail. If below 8, forward the email plus the AI draft to a human agent for review.
Step 4: Test with 20 real support emails. Review every AI draft for the first week. Adjust your system prompt based on what it gets wrong — usually tone issues or missing policy details.
Cost breakdown
| Item | Cost | Notes |
|---|---|---|
| Zapier | $20-$50/mo | Depends on email volume |
| OpenAI API | $10-$30/mo | ~$0.02 per email at 500-1500 emails/mo |
| Setup time | 30-60 min | One-time |
| Total monthly | $30-$80/mo | Saves 2+ hours per day |
Frequently asked questions
Not if your prompt is well-written. The AI uses your brand voice, references your actual policies, and personalizes based on the customer's specific issue. Most customers can't tell the difference from a human-written response.
Start with human-in-the-loop: the AI drafts, a human approves. After 2-3 weeks of tuning, switch high-confidence replies to auto-send and keep edge cases for review.
Yes. Both Zendesk and Freshdesk integrate with Zapier and Make. Use the same workflow but trigger on new tickets instead of new emails.