Crypto email marketing: find a sender that allows you, keep security mail apart, and write so phishers cannot copy you

Crypto email marketing starts with a question most guides skip: will your email platform let you send at all? Several of the best known platforms list cryptocurrency among the businesses they restrict. After that, the work is the same as good email anywhere, with two extra rules. Keep security and account mail in a separate stream from promotions, so the messages that protect users are always trusted. And write every email so that a phishing copy is easy to spot: no surprise links to log in, no requests for seed phrases, and a sending domain that passes authentication checks. Send only to people who asked, follow CAN-SPAM in the US, and keep promotional claims away from returns and price predictions.

Check your email platform's rules before you build a list

Email platforms protect their sending reputation by limiting industries with high complaint rates, and crypto is often on that list. What three widely used platforms said on 21 October 2026:

Platform	What its acceptable use policy says about crypto
Mailchimp	Lists "Cryptocurrencies, virtual currencies, and any digital assets related to an Initial Coin Offering" among businesses it "may not allow" because of higher than average abuse complaints.
Klaviyo	Says the service may not be used to offer products or services related to "Cryptocurrencies and any related crypto services and information".
Constant Contact	Lists "Cryptocurrency, including any form of digital currency" among industries where it reserves the right to suspend users who market, send or sell related content.

These policies change, so read the current version for any platform you consider and, where the wording is unclear, ask its compliance team in writing before you import a list. Moving a large list after a suspension is painful, because the sending history and the automations stay behind. A sound setup is a transactional email service for account mail, plus a marketing platform that has confirmed in writing that your business is allowed.

Two streams: security mail and marketing mail

A crypto user's inbox is full of fake messages pretending to be from exchanges and wallets. Your real security notices must stand apart from your promotions, in sender, in look and in tone.

• Security and account stream. Login alerts, withdrawal confirmations, device approvals, policy changes. Send from a dedicated address such as security@ or no-reply@ on your main domain, through a transactional service. Plain design, no offers.
• Marketing stream. Product news, education, new features, events. Send from a different address, ideally a subdomain such as news.yourdomain.com, so that a complaint spike on a campaign does not hurt delivery of security mail.

The US rules support this split. Under the CAN-SPAM Rule, 16 CFR 316.3, content that gives "safety or security information" about a product the recipient uses counts as transactional or relationship content. But a message that mixes that content with a promotion can be treated as commercial if the subject line suggests a promotion or the security content does not come first. Keeping the streams apart keeps the security mail clearly transactional.

Write emails a phisher cannot easily copy

You cannot stop criminals from copying your template, but you can train users to spot the copy:

• State in every email, and on your help centre, that you will never ask for a seed phrase, private key or password by email.
• Do not put "log in now" buttons in marketing emails. Ask users to open the app or type your address themselves.
• Avoid urgent deadlines and threats such as "your account will be closed in 24 hours". They are the pattern phishers use.
• Use the same sender names every time, and publish a page listing them.
• Authenticate your domain fully. Google's email sender guidelines, read on 21 October 2026, require SPF or DKIM for everyone sending to Gmail, and SPF, DKIM and DMARC for senders of more than 5,000 messages a day to Gmail accounts. Once DMARC is in place, moving its policy from none to quarantine or reject makes spoofing your exact domain much harder.

What CAN-SPAM asks of every marketing email

If you send commercial email to people in the United States, the CAN-SPAM Act (15 USC 7704) and the FTC's rule in 16 CFR Part 316 apply. The main points, read on 21 October 2026:

• Header information must not be materially false or misleading, and the subject line must not mislead about the content.
• The message must clearly identify itself as an advertisement unless the recipient gave prior affirmative consent, include a clear way to opt out, and show a valid physical postal address.
• The opt out mechanism must keep working for at least 30 days after the send, and opt out requests must be honoured within 10 business days.
• You may not charge a fee or ask for anything beyond the email address and opt out preferences to process an opt out (16 CFR 316.5).

Gmail adds its own rule for marketing and subscribed messages: support one click unsubscribe and show a visible unsubscribe link in the body, and keep the spam rate in Postmaster Tools below 0.30%. If you send to other countries, check their email consent law too, because many are stricter than the US about permission.

Building the list the right way

Bought lists, scraped wallet addresses matched to emails and airdrop sign ups collected with no clear consent produce complaints, and complaints are what get crypto senders suspended. Better sources:

• Account sign up, with a separate, unticked box for marketing email.
• A newsletter form on educational pages, saying what you will send and how often.
• Event and webinar registrations, with the marketing consent stated on the form.
• A waitlist for a product launch, with a confirmation email (double opt in) so the address is real.

What to send

The emails that keep crypto users subscribed are useful, not hyped:

• Welcome series. How to secure the account, how to recognise your real emails, where to get help.
• Product updates. New networks, new features, fee changes, explained plainly.
• Education. How a feature works, tax reporting reminders, security habits.
• Market notes, if you publish them, framed as information and never as advice to buy or sell.

Keep the same claims discipline as in your ads: no promised returns, no price predictions, no testimonials about profits, no countdown pressure around token sales. Our guide to cryptocurrency marketing covers those claims and the paid promoter rules across channels. For list hygiene, segments and the flows that hold up inbox placement over time, see our page on email deliverability.

Questions about crypto email marketing

Does Mailchimp allow cryptocurrency email marketing?

Its acceptable use policy, read on 21 October 2026, lists cryptocurrencies, virtual currencies and ICO related assets among businesses it may not allow. Ask Mailchimp in writing about your specific business before you rely on it.

Is a security alert email covered by CAN-SPAM?

A message that only gives safety or security information about a product the user has is transactional or relationship content under 16 CFR 316.3. It still must not have false or misleading header information. Adding a promotion can make it commercial.

Should a crypto exchange use double opt in?

Yes. It confirms the address is real and the person wants the email, which lowers complaints. That matters more in an industry where platforms already watch complaint rates closely.

How do I stop phishers copying our emails?

Set up SPF, DKIM and DMARC and move DMARC towards quarantine or reject, use fixed sender names, never put login links or seed phrase requests in email, and tell users clearly what you will never ask for.

Can crypto companies email airdrop participants?

Only if those people agreed to receive email from you. A wallet address or an airdrop claim is not consent to marketing email.

The help centre an assistant reads for you

When a user receives a strange message, many now paste it into ChatGPT or Gemini and ask "is this really from my exchange?" The assistant's answer leans on whatever it can find: your help centre, your published list of sender addresses, forum threads and news stories. A company that has written down clearly what it will and will not send is far more likely to be described correctly. Checking what the assistants say when people ask about your brand, your emails and your security, and which pages they quote, is the newer task here. AI Knows Us tracks exactly that across ChatGPT, Gemini, Perplexity, Claude and Google AI Overviews.