What is cold email?

What is Cold Email?

A cold email is an unsolicited message to a prospect who has not opted in. It works at scale when it is short, specific and asks for something small. The structural rules are consistent across every high-performing team: under 90 words, one idea, a subject line that reads like internal mail rather than marketing, a first line about them rather than about you, an observation that could only apply to their company, and a low-friction ask — interest, not a 30-minute meeting. Reply rates of 3-8% are normal for a well-targeted list; anything above 10% usually means either a very narrow list or an unusually strong trigger event. Deliverability now matters as much as copy: domain authentication, warmed sending domains, sane volume per mailbox and clean lists decide whether good writing ever reaches an inbox.

When to use Cold Email

• Outbound sequences into target accounts alongside calls and social touches
• Following up after an unanswered cold call
• Re-engaging closed-lost deals after a trigger event

Real examples

• Subject: 'question about your SDR ramp'
• Opener: 'Saw you've hired four SDRs since June — congratulations, and also, ouch.'
• Ask: 'Worth a short reply either way? Happy to send the one-page version if useful.'

Common mistakes

• Writing about your company in the first sentence.
• Asking for 30 minutes from someone who has never heard of you.
• Fake personalisation — a merged company name is not research and reads worse than nothing.
• Ignoring deliverability, so well-written emails land in spam at volume.

Want to practice Cold Email live? Run a roleplay with an AI buyer.