Contents · Cold email basics

Cold email basics · Updated Oct 8, 2026

Unsubscribe and address rules

In short

Every cold email must let people opt out and say who it's from. SendPath makes sure each email has an unsubscribe link and your postal address, and never emails anyone who opted out.

What every SendPath email has

An unsubscribe link
{{unsubscribe_url}} in the email: one click and a confirm button. How it works
A one-click Unsubscribe button
Headers that Gmail, Yahoo and others show next to your name.
Your postal address
{{physical_address}}, filled from Settings.
Opt-outs honoured at once
An unsubscribe is suppressed immediately, in every campaign.

A campaign can't start without the first and third; the gate checks every email.

The main laws

This is a short overview, not legal advice. The rules depend on where the people you email are. Check them for the countries you send to.
United States (CAN-SPAM)
Allows cold email to businesses. You need truthful sender details and subject lines, a postal address, and a working opt-out that you honour quickly.
European Union and UK (GDPR and ePrivacy)
Emailing a person's work address uses their personal data, so you need a lawful reason (often “legitimate interest”), an easy opt-out, and to say where you got their address if asked. Some countries, Germany for example, are stricter about any cold email.
Canada (CASL)
Stricter: generally needs consent, with narrow exceptions such as an address published for business and an email relevant to the person's role.

SendPath's own rules are in the Acceptable Use Policy: no bought, rented or scraped lists without a lawful basis for every address, and nothing deceptive.

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