Prompt Claude for Writing Cold Emails

Cold emailing remains one of the most powerful levers for business development, but writing messages that capture attention and generate responses is a real challenge. Between saturated inboxes and increasingly strict spam filters, every word counts. Claude excels at writing cold emails because it can adapt the tone, personalize the message based on the prospect's industry, and structure the argument to maximize open and reply rates. Unlike generic templates, Claude generates unique emails that avoid robotic phrasing detected by filters. By providing context about your offer, your target profile, and your outreach goal, you get compelling, natural, and action-oriented emails. Whether you are doing B2B prospecting to sell a SaaS, freelancing to land gigs, or recruiting to attract talent, the following prompts will help you produce professional, personalized email sequences in seconds.

The prompt

Claude

You are a B2B copywriting and cold emailing expert. Write a cold outreach email for the following context:

My company: [COMPANY_NAME, INDUSTRY, MAIN VALUE PROPOSITION]
My offer: [PRODUCT_OR_SERVICE, KEY MEASURABLE BENEFIT]
Target: [RECIPIENT_JOB_TITLE, TARGET_COMPANY_SIZE_AND_INDUSTRY]
Email goal: [E.G., GET A 15-MINUTE CALL, PROPOSE A DEMO, SEND A CASE STUDY]
Desired tone: [E.G., PROFESSIONAL BUT ACCESSIBLE, DIRECT AND CONCISE, CONSULTATIVE]

Constraints:

Maximum length: 150 words (excluding signature)
Catchy subject line under 50 characters (propose 3 variants)
Start with a personalized hook related to the prospect (no "I'm reaching out to you")
Identify a specific pain point in the prospect's industry
Present the value in one sentence with a quantified result if possible
End with a clear CTA with a simple open-ended question
Avoid spam trigger words (free, exceptional offer, urgent...)
Add a compelling PS with social proof or a striking fact

Also generate a follow-up variant to send 3 days later if no response.

Personalize this prompt with Léa

Answer 3 questions and Léa tailors the prompt to your situation.

Why it works

This prompt works because it structures the request around the critical elements of an effective cold email: personalization, brevity, and clear CTA. By imposing precise constraints (150 words, no spam words, contextualized hook), it forces Claude to produce a value-packed email rather than a generic message. The request for subject line variants and a follow-up transforms a simple generation into a complete mini-prospecting sequence.

Expected result

You get a ready-to-send cold email with three testable subject line variants, a concise and prospect-industry-personalized body, plus a complementary follow-up email. Everything respects deliverability best practices and commercial copywriting.

Variants by level

FAQ

How to effectively personalize a cold email generated by Claude?

The key is to provide Claude with specific information about your prospect before generation: their industry, current challenges, recent company news, or content they've posted on LinkedIn. The richer the context, the more personalized the email. After generation, replace the bracketed elements with real data and tweak the first two lines to reflect genuine research on the prospect. A good cold email should feel like it was written only for that person.

How many email variants should I generate to test my campaigns?

For an effective campaign, generate at least 3-5 variants of your email with different hooks. Ask Claude to produce versions using different frameworks (PAS, AIDA, Before-After-Bridge) and different subject line types (question, statistic, personal reference). Test each variant on a sample of 50-100 prospects before scaling the best-performing version. Claude can also help you analyze open and reply rates to iterate on your messages.

How to prevent my Claude-generated emails from landing in spam?

Explicitly ask Claude to avoid spam trigger words (free, promotion, limited offer, urgent, click here) and limit excessive punctuation. Favor plain text format without images or multiple links in the first email. Keep the email under 150 words, use a maximum of one URL, and avoid capitalization in the subject line. Claude can also check your email against a list of trigger words if you ask. Finally, deliverability also depends on technical factors (SPF, DKIM, domain warm-up) that go beyond content.

How to use this prompt

Copy the prompt with the button above.
Paste it into ChatGPT, Claude or your favorite AI assistant.
Replace the bracketed variables with your details, then refine the result.

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