The cold email basics are simple: send a short, honest message to a relevant business contact, explain why you are writing, ask one easy question, and let them opt out at any time. Cold email works when it feels like a considerate note, not a mass broadcast, and it only works well when you respect the legal rules around consent.
Before anything else, a caution. Rules differ widely between countries, and some places require permission before you send marketing messages at all. This article is general information, not legal advice, so check the rules that apply to you or ask a professional.
Cold email basics: understand the rules first
Two frameworks come up most often. In general terms, CAN-SPAM in the United States sets requirements for commercial email, including not misleading people about who you are, identifying the message as an advertisement where appropriate, including a valid postal address and giving a clear way to opt out that you honor promptly. The GDPR in Europe and the UK is broader and concerns personal data, and a related set of rules covers electronic marketing. Many countries treat messages to individuals differently from messages to companies, and some require prior consent.
Practical habits that help in almost any country:
- Use only public business information, such as a published work address or contact form, not private details.
- Be truthful in the sender name, subject line and body.
- State who you are and why you are contacting this person.
- Include an easy, working way to say no, and act on it quickly.
- Keep a record of opt-outs and never contact those people again.
- Collect as little personal data as you need and delete what you no longer use.
If you are unsure whether you may email someone in a particular country, do not send. When in doubt, a phone call, a contact form or a warm introduction is a safer first step.
Start with research, not a template
Good cold email starts before you write. Choose businesses that clearly fit what you offer and find a role that would care about it. Our guide to B2B lead research basics explains how to build a short, relevant list from public sources.
Then find one specific reason to write. It might be a new service they launched, a job advert that hints at a need, or a problem common in their industry. If you cannot find a reason, that is a sign to skip them for now.
Write a message people can answer
The subject line
Keep it short, plain and accurate. Something like a question about a specific topic works better than a clever line. Avoid fake replies, urgency tricks and capital letters. Misleading subject lines also break the rules above.
The body
Aim for under a hundred and fifty words. A reliable structure has four parts.
- Who you are, in one sentence.
- Why them, pointing to the specific thing you noticed.
- What you offer, described in terms of a result, not a feature list.
- One small ask, such as whether it is worth a short chat, or whether they are the right person.
Write the way you would speak to a respected colleague. Skip flattery, buzzwords and long histories of your company.
The sign-off
Include your full name, business name, a postal address if the rules where you operate require one, and a plain sentence explaining how to opt out, for example inviting them to reply that they would prefer not to hear from you.
A short example structure
Here is a pattern, not a script to copy word for word. Open with your name and what you do. Mention the specific thing you noticed about their business. Say in one sentence how you have helped similar businesses. Ask a single question that can be answered in a few words. Close with a polite line making clear they can say no.
Because every sentence is about them and the message is short, it is easy to read on a phone and easy to answer.
Follow up without being a pest
A single polite follow-up after several days is normal, since people are busy and messages get buried. A second, with something new such as a useful resource, is acceptable. Beyond that, stop. Constant chasing damages your reputation and may cross into harassment.
- Space follow-ups out, with several days between them.
- Add something useful each time, not just a nudge.
- Stop immediately if the person says no or asks to be removed.
Track what happens
Keep a simple record of who you contacted, when, what you said and what happened. A spreadsheet is enough, and our walkthrough on building a simple CRM in Google Sheets shows a clean layout with an opt-out column. Review your results every couple of weeks. If few people answer, change one thing at a time, such as the subject line or the target role, so you can see what made a difference.
Protect your sending reputation
Send from a real address that you own, keep volumes modest and avoid sending identical messages to large groups. Messages that many recipients report as unwanted can damage your ability to reach inboxes at all. Quality, not volume, is the safest way to protect that reputation.
Where to start
Pick five businesses that clearly fit your offer, confirm that you may contact them under the rules where they operate, and write five short messages, each with a specific reason. Send them, record the outcome and note what you learn. For more practical guides, browse our business articles.
Frequently asked questions
Is cold email legal?
It depends on the country and on whether you are writing to a company or an individual. Some places require prior consent, so check local rules or ask a professional before sending.
How long should a cold email be?
Under about 150 words is a good target. Short messages are easier to read and to answer.
How many follow-ups should I send?
One or two polite follow-ups, spaced several days apart, are usually enough. Stop at once if someone declines or asks to be removed.
Where should I get email addresses from?
Use public business contact details that organizations publish for that purpose. Avoid bought lists and private personal data.
