How to use Claude to answer customer emails faster

What Claude is good at, and what stays with you

Good jobs for Claude:

• Sorting a pile of emails into complaints, order questions and refund requests
• Summarising a long back-and-forth thread in three lines
• Drafting a polite reply that follows your own policies
• Turning a blunt message into a firm but friendly one

Jobs that stay with you:

• Checking order status, tracking numbers and stock in your own system
• Deciding on refunds and goodwill gestures
• Anything that sounds like a legal threat
• The final read and the send button

Claude only knows what you tell it. If you don't give it your returns policy, it will guess, and guesses in a customer email cause more emails.

Before you start: what not to paste

Keep it simple. Before you paste an email into Claude, remove anything you wouldn't want sitting in another company's system: NRIC numbers, card details, full home addresses and phone numbers. A first name and an order number are usually all Claude needs.

Then check one setting. On Claude's personal plans, each person can turn off the setting that lets their chats be used to improve Claude's models. On the Team and Enterprise plans, your data isn't used for training by default. Our guide to Claude vs ChatGPT for business explains the plans and settings in more detail. And as with any service you use, your business is still responsible for how it handles customers' personal data under the PDPA.

Step 1: Write a one-page reply guide

This is the step most people skip, and it's the one that makes the drafts sound like you. Write down how you reply to customers and the rules you always follow. Sunday Pantry's version looks like this:

Sunday Pantry reply guide
Tone: warm, short, no exclamation marks. Sign off as "Mei, Sunday Pantry".
Delivery: 3 to 5 working days islandwide. Orders after 2pm ship the next working day.
Returns: within 14 days, unused, in original packaging. Customer pays return postage unless the item arrived damaged.
Damaged items: ask for a photo, then offer a replacement or a full refund.
Never promise a delivery date we can't check. Never offer discounts without asking the owner.

Yours can be rough. Half a page is plenty.

Step 2: Save it in a project

Instead of pasting your guide every time, create a project in Claude. Projects are available on every Claude plan, including the free one, which allows up to five. Add your reply guide to the project's instructions, and every chat inside that project starts with your rules already loaded.

Call it something obvious, like "Customer emails".

Step 3: Sort the morning's emails

Open a new chat in the project, paste in the morning's emails with personal details removed, and use this prompt:

Here are this morning's customer emails, separated by "---". Sort each one into: complaint, order question, refund or return, or other. For each, give me a one-line summary and mark it urgent if the customer is upset or waiting on something time-sensitive. Show the urgent ones first.

You get a short list instead of a full inbox, and you can see in ten seconds which three emails need you first.

Step 4: Draft the replies

Take one email at a time. Here's a made-up example Sunday Pantry might get:

"Ordered the ceramic bowls last week, order #4471. Two arrived cracked. Honestly quite disappointed, these were a gift."

Paste it in with this prompt:

Draft a reply to this email using our reply guide. Acknowledge the problem, apologise once, and ask for what we need to fix it. Keep it under 120 words. If anything in our guide doesn't cover this case, tell me instead of guessing.

Claude might come back with something like:

Hi Rachel,
I'm sorry the bowls arrived cracked, especially when they were meant as a gift. Could you send us a photo of the damaged bowls? Once we have it, we can send replacements or give you a full refund, whichever you prefer.
Mei, Sunday Pantry

That last line of the prompt, "tell me instead of guessing", matters more than it looks. It's how you stop Claude from inventing a policy you don't have.

Step 5: Check before you send

Every draft gets a 30-second read before it goes out. Look for four things:

1. Facts. Is the order number, item and date right? Check your own system, not the draft.
2. Promises. Does it offer anything outside your policy?
3. Names. Right customer name, right sign-off.
4. Tone. Would you say this to the customer's face?

Claude can make mistakes, so this step isn't optional. It's also much faster than writing from a blank screen.

Step 6: Turn your best replies into templates

At the end of the week, paste in the five replies you were happiest with and ask:

Based on these replies, suggest additions to our reply guide so future drafts sound more like these. Only suggest rules that appear in at least two replies.

Add what you agree with to the project instructions. The drafts get better every week without you doing much extra.

What about connecting Gmail?

Claude can connect to Gmail, so it can search and read your emails and draft replies without copy and paste. It can send replies too, but by default it asks for your approval before each one. On the Team and Enterprise plans, an owner has to switch the connector on first.

It's useful once you trust your reply guide, but start with copy and paste. It's slower, and that's the point: you see exactly what Claude sees.

Want help setting this up?

In a 1-hour 1-to-1 Claude call (S$150, live on Google Meet), I'll set this up with you on your own inbox: your reply guide, your project, and prompts that fit the emails you actually get. If you'd like to talk it through first, book a free 15-minute call instead.

WhatsApp me on +65 8942 4928 or email jerome@close7.co.

Common questions

Can Claude send emails for me?

If you connect Gmail, Claude can send, reply to and forward emails, but by default it asks for your approval before each one. We suggest you read and send every reply yourself, at least until your reply guide is working well.

Is it safe to paste customer emails into Claude?

Take out NRIC numbers, card details, full addresses and phone numbers first; a first name and order number are usually enough. On personal plans, check the model improvement setting. On the Team and Enterprise plans, data isn't used for training by default. Your business is still responsible for customers' personal data under the PDPA.

Will the replies sound like a robot?

Not if you give Claude a reply guide with your tone, sign-off and policies, and keep improving it with replies you liked. Always read the draft before you send it.

Do I need a paid Claude plan for this?

You can try every step here on the free plan, which allows up to five projects. Every plan has usage limits, so a busy inbox may be easier on a paid plan. We can help you decide on a free call.

Can Claude reply in Chinese or Malay?

Claude can draft in many languages. If you don't read the language well yourself, have a fluent colleague check the reply before it goes out.

Sources

Checked 23 October 2026.

• Claude Help Centre: What are projects?
• Claude Help Centre: Use Google Workspace connectors
• Anthropic Privacy Center: Is my data used for model training?
• Anthropic Privacy Center: How do I change my model improvement privacy settings?
• Claude: Plans and pricing
• PDPC: Overview of the Personal Data Protection Act