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Email marketing · Compliance

Cold email is legal in the US. Careless cold email is not.

CAN-SPAM allows unsolicited business email if you follow its rules. The bigger risks are spam complaints, blocked domains and countries with stricter laws.

Legal in the US with conditions

Stricter rules in Canada and Germany

Deliverability is the practical limit

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The short answer

Yes, cold emailing is legal in the United States, including cold email to businesses, as long as each message follows the CAN-SPAM Act. US law does not require the recipient to have opted in first. It does require honest headers and subject lines, a clear statement that the message is an ad, a valid postal address, and an opt-out that works and is honored within 10 business days. Other countries are stricter: Canada and Germany generally require consent first.

In practice, the law is rarely what stops a cold email program. Inbox providers are. Google and Yahoo block or junk mail from senders who get too many spam complaints, and that can hurt the domain you use for invoices and customer email too. This guide covers the rules, the risks and safer ways to reach new prospects. It is general information, not legal advice.

What CAN-SPAM requires for every commercial email

The FTC enforces CAN-SPAM and publishes a compliance guide. Its core rules apply to any email whose main purpose is to advertise or promote a product or service:

  1. Accurate header information. The From, To and Reply-To fields and routing must identify you. No fake names or spoofed domains.
  2. An honest subject line. It must reflect what the message is about. “Re: our call” on a first-touch email is deceptive.
  3. Disclose that it is an ad. The disclosure must be clear and conspicuous. The law does not prescribe exact wording.
  4. A valid physical postal address. A street address, a post office box registered with USPS, or a private mailbox registered under postal rules.
  5. A clear way to opt out. Explain how, and make it easy: a reply or a link that works for at least 30 days after you send.
  6. Honor opt-outs within 10 business days. No fees, no login, nothing more than an email address. You cannot sell or transfer the address after an opt-out.
  7. Watch your vendors. If you hire a lead-generation firm, you remain responsible. The FTC says both the company promoted and the company sending can be held liable.

The FTC guide states plainly that the law makes no exception for business-to-business email. Each separate email in violation can bring penalties of up to $53,088, according to the guide as of its January 2024 update.

Where other countries differ

CAN-SPAM covers US law. If your list includes people in other countries, their laws may apply too:

Canada

Canada’s anti-spam legislation (CASL) asks businesses to get consent before sending commercial electronic messages. The government’s CASL site describes express and implied consent rules that are much tighter than US law.

Germany

Section 7 of Germany’s Act against Unfair Competition treats email advertising without the addressee’s prior express consent as an unacceptable nuisance. A narrow exception covers existing customers buying similar goods who were told they could object.

European Union and UK

Rules vary by country and also touch data protection law. Many European markets require consent for marketing email, especially to individuals. Treat any EU or UK outreach as a question for local counsel.

A simple rule: if you cannot confirm the prospect is in the US, do not add them to a cold sequence until you know which law applies.

The bigger risk: deliverability

A legal email can still damage your business if it lands as spam. Since February 2024, Google requires every sender to Gmail accounts to set up SPF or DKIM, keep spam complaints reported in Postmaster Tools below 0.3%, and use proper DNS and encryption. Google recommends staying below 0.1%. Senders of more than 5,000 messages a day to Gmail must also publish DMARC and support one-click unsubscribe for marketing mail. Yahoo has similar rules and asks bulk senders to honor unsubscribes within two days.

Cold email is the kind of mail people mark as spam. A few hundred complaints on a small campaign can push your rate past those thresholds. When that happens, the damage is not limited to the cold campaign:

  • Quotes, invoices and replies from the same domain start landing in junk folders.
  • Your email marketing to real customers gets filtered.
  • Recovering a domain’s reputation can take weeks of careful, low-volume sending.

If you send cold email, do it carefully

Some B2B companies use cold email well. The ones that do follow rules that go beyond the legal minimum:

  • Use a separate domain or subdomain for outreach so problems do not spread to your main business email. Authenticate it with SPF, DKIM and DMARC.
  • Build small, researched lists. Pick people whose role and company match a real problem you solve. Avoid bought lists; they are full of stale and trap addresses that cause bounces.
  • Verify addresses before sending and remove anything that bounces.
  • Write one-to-one emails, not newsletters. Short, specific to the recipient, plain text, one question.
  • Send low volumes and spread them out. A few dozen relevant emails a day beats thousands of generic ones.
  • Stop after two or three follow-ups. Silence is an answer.
  • Make opting out obvious and process opt-outs across every tool you use, not just one.
  • Never send cold prospects into your marketing platform. Mailchimp, Klaviyo and HubSpot generally require permission-based lists, and importing cold contacts can get your account suspended.

Safer ways to reach new B2B prospects

If the risk to your domain worries you, these channels bring in prospects without unsolicited email:

  • Search. People who search for what you sell are already looking. SEO and Google Ads put you in front of them.
  • Gated useful content. A checklist, calculator or guide in exchange for an email address builds a list of people who asked to hear from you.
  • LinkedIn. Helpful posts from the owner and staff, plus targeted ads, let prospects raise their hand.
  • Referrals and partners. Ask happy clients and complementary firms for introductions.
  • Events and webinars. Attendees who register can opt in to follow-up.

Want more inbound leads and fewer risky campaigns? Book a free 30-minute call. We look at what you have and tell you what we would change first. No obligation. Or call 954-539-5678.

JLB has helped growing businesses with websites and marketing for more than 15 years, including email marketing on MailChimp, Klaviyo and HubSpot and Google Ads management adjusted weekly.

A quick checklist before you hit send

  1. Is every recipient in the US, or have you checked the law where they are?
  2. Does the From name and address identify your business?
  3. Does the subject line honestly describe the email?
  4. Is there a clear ad disclosure and your postal address?
  5. Does the opt-out work, and will it be honored within 10 business days everywhere you store contacts?
  6. Is the sending domain authenticated, and is it separate from your main domain?
  7. Have the addresses been verified, and is the volume small enough to watch complaints?
  8. If an agency sends for you, have you reviewed what it sends in your name?

If any answer is no, fix it first. For anything involving other countries, regulated industries or bought data, confirm with your attorney. This article is general information, not legal advice.

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Questions we hear

Is cold emailing legal in the US?

Generally, yes. CAN-SPAM does not require prior consent for commercial email, but every message must have accurate headers, an honest subject line, a postal address, an ad disclosure and a working opt-out honored within 10 business days.

Does CAN-SPAM apply to B2B email?

Yes. The FTC says the law makes no exception for business-to-business email, so cold emails to company addresses must follow the same rules.

Is cold emailing legal in Germany?

Germany is much stricter. Its Act against Unfair Competition treats email advertising without prior express consent as an unacceptable nuisance, with a narrow exception for existing customers. Get local legal advice before emailing German prospects.

Can I buy an email list for cold outreach?

Buying a list is not banned by CAN-SPAM, but bought lists tend to contain stale and trap addresses that drive bounces and spam complaints. That can damage your domain reputation for all your email.

What is the penalty for breaking CAN-SPAM?

The FTC guide says each separate email in violation can cost up to $53,088, as of its January 2024 update. This is general information, not legal advice.

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