Unsubscribe: Legal Obligations and Best Practice in the UK
Your obligations around email unsubscribe - what the law requires, and how a good unsubscribe experience protects you.
7 min read
Making it easy to unsubscribe is both a legal obligation and good for your deliverability. Here's what you need to know.
The obligation
When you market by email, people must be able to opt out easily - typically by a working unsubscribe link or a clear instruction (eg 'reply unsubscribe'). You must honour opt-outs promptly and stop further marketing messages.
Why unsubscribe matters beyond law
- A prominent unsubscribe reduces spam complaints.
- Fewer complaints protect your sender reputation.
- People who stay are more engaged, improving deliverability.
- Forcing people to stay breeds resentment and complaints.
Best practice
- Make the unsubscribe link clear and easy to find.
- Process opt-outs promptly and automatically where possible.
- Don't require login or multiple steps.
- Consider a preference centre but keep a full unsubscribe available.
- Keep an audit trail of when opt-outs were received.
Transactional vs marketing
Service messages may still be sent even if someone opts out of marketing - but make sure you stop marketing messages promptly and don't blur the lines.