B2B cold email: how it works and how to keep it deliverable

B2B cold email — also called cold emailing or cold outreach — is still the fastest outbound channel for winning new business customers — if you send from your own inbox, keep a steady pace, and follow the CAN-SPAM basics. Here is how it works.

How automated B2B cold email works

You pick the trade and the area. Fitting companies are found in current business listings, each address is verified, and a plain-text email goes out from your own inbox — one every three minutes, around the clock. Replies come straight back to you; you answer the companies that are interested. That even pace, not a blast, is what keeps a sending inbox healthy.

Deliverability: the part most tools get wrong

• Verify before you send — dead addresses are dropped, not bounced.
• Steady pace — a gap between messages reads as a person, not a machine.
• Your own domain with SPF, DKIM and DMARC in order (free checkers at /tools/).
• Honour opt-outs instantly and never re-add them.

Is B2B cold email legal?

In the US, B2B cold email is permitted on an opt-out basis under the CAN-SPAM Act — accurate sender details, a physical postal address and a working unsubscribe in every message. See our fuller cold email & the law guide. This is general information, not legal advice.