What is cold email?
A first message to someone with no prior relationship to the sender, legal under conditions, often banned by the tool sending it.
Cold email — Cold email is unsolicited business email sent to a person who has not previously interacted with the sender, to open a conversation. It is legal in many jurisdictions under conditions — accurate identity, an opt-out, no deception — and forbidden by many CRM vendors' terms.
Why it matters
Cold email is how most B2B outbound starts: a message to a person who has never interacted with the sender, aimed at opening a conversation rather than continuing one. In the United States, CAN-SPAM permits it without prior consent, as long as the sender's identity is accurate, a working opt-out is included, and the subject line is not deceptive. Other jurisdictions set a higher bar, and a sender operating across borders has to check each one rather than assuming the rule that applies at home applies everywhere.
The rule that trips teams up is not the law; it is the tool. Legal permission to send cold email and a mainstream CRM's acceptable-use policy are two different questions, and most CRM and email platforms built for marketing or transactional mail explicitly prohibit unsolicited outreach in their terms, whatever the law allows. Sending cold volume through a tool not built or licensed for it risks the account, not only the message. A system built for cold outreach handles deliverability, suppression and sending domains as first-class concerns, not as a workaround.
How compliant cold email is sent
- 1
The sender's identity is accurate
A real name, company and reply address, not a disguised source.
- 2
An opt-out is included
A working way to stop future messages, honoured promptly.
- 3
The subject line is not deceptive
It reflects what the message actually contains.
- 4
The list is checked against suppression
Unsubscribes, bounces and legal holds excluded before sending.
- 5
It is sent from infrastructure built for it
A sender pool on a secondary domain, not a primary mailbox.
The mistake to watch for
Questions
- How is cold email different from marketing email?
- Marketing email goes to people who opted in. Cold email goes to people with no prior relationship to the sender, which is why it carries stricter identity and opt-out requirements and is banned outright by many mainstream tools.
- Is cold email legal everywhere?
- No. It is permitted under conditions in the US and in many countries relying on a legitimate-interest basis, but stricter regimes like Canada's CASL require prior consent, so the rule depends on where the recipient is.
- Why do CRM vendors prohibit cold email in their terms?
- Because sending unsolicited volume risks their shared sending infrastructure and reputation, so most mainstream platforms restrict it regardless of what the law permits.