What is Cold email?
A cold email is a one-to-one business email sent to someone who has not contacted you before, usually to start a sales conversation.
Also called: cold outreach email.
Cold email differs from spam in intent and in form: it is written for one recipient or a narrow group, it names a reason the message is relevant to them, and it lets them say no. It differs from a newsletter because the recipient never subscribed. In the US it is legal to send, but every commercial email, cold or not, falls under CAN-SPAM, and the law makes no exception for business-to-business email.
A cold email campaign has three parts that fail independently. The list decides who receives it and how many addresses bounce; see bounce rate and SMTP verification. The sending setup decides whether it reaches the inbox; see SPF, DKIM, DMARC and warm-up. The message decides whether anyone replies.
Published averages for reply rates vary widely. One 2026 benchmark report puts the overall average reply rate at 3.43%, and the same report advises keeping bounces under 2%. Treat both as starting assumptions and replace them with your own numbers once you have sent a few hundred messages.
To plan a campaign backwards from the meetings you want, use the cold email calculator; for a first draft, the cold email templates are written per trade.