FIELD GUIDE 14 / Media & channels
Email marketing with permission: useful messages, honest choices
Email can develop an existing relationship at low distribution cost, but access to an inbox is not unlimited. A durable programme begins with a clear reason to subscribe, sends what was promised and makes withdrawal simple.
QUICK ANSWER
The idea in one minute.
List quality, consent, onboarding, frequency, accessibility and respectful unsubscribe. Permission is a relationship, not a purchased asset Set expectations at sign-up Make leaving as clear as joining
KEY IDEAS
What you will learn
- Permission is a relationship, not a purchased asset
- Set expectations at sign-up
- Make leaving as clear as joining
01
Build the list around a promise
Explain what subscribers will receive, who sends it and the approximate frequency before collecting an address. Keep promotional permission separate from account notices, receipts or service messages. A necessary transaction should not silently enrol someone in unrelated marketing.
Avoid purchased or scraped lists. They lack a direct expectation, produce complaints and make it difficult to demonstrate how permission was obtained. List size is less valuable than a smaller group that recognises the sender and wants the content.
02
Design the first messages carefully
The confirmation and welcome sequence should restate the promise, set frequency, provide preferences and deliver the expected value. Ask for only the profile information needed to improve relevance. More fields do not automatically create better personalisation.
Use a recognisable sender name and honest subject line. The preview text should add context rather than repeat the subject. Avoid false reply markers, invented forwarding language and urgency unsupported by the offer.
03
Make the message usable
Structure email with a clear heading, concise sections, descriptive links and one primary action. Provide meaningful alternative text for informative images and do not place essential details only inside an image. Test at narrow widths, large text sizes and with images disabled.
Frequency should follow value and audience expectations. Watch complaints, unsubscribes, inactivity and replies alongside opens and clicks. Privacy features and automated image loading can make open rates an uncertain signal, so do not optimise the programme around that number alone.
04
Respect preferences and exits
Place a visible unsubscribe mechanism in every marketing message and process requests promptly. A preference centre can offer topic or frequency choices, but it must not turn leaving into a puzzle. Do not require a password merely to stop promotional email.
Keep a suppression record sufficient to avoid sending again, protect the list, limit access and delete unused profile data according to a retention plan. Permission should be reviewable: record when, where and what a person agreed to.
SOURCE DESK
Research and further reading
These links lead to public guidance, open textbooks or freely accessible research. This guide explains the ideas in original language; open the sources to examine context, definitions and limitations.
- CAN-SPAM Act: A Compliance Guide for Business ↗FTC requirements for commercial email, truthful headers, addresses and opt-out mechanisms.
- Electronic mail marketing ↗UK Information Commissioner guidance on consent and direct marketing by email.
- Email Marketing ↗OpenStax overview of permission, content, segmentation and campaign metrics.
- Images Tutorial ↗W3C guidance on alternative text for informative, decorative and functional images.