The Segmentation Playbook Stop talking to everyone. The same way.
One message for everyone is tuned for nobody. It irritates the people you should have left alone, buries the ones ready to buy, and teaches inbox providers your mail is unwanted. This guide shows how to sort your contacts by what they are about to do, and say the right thing once.
Your list is a liability you have not been billed for yet.
At some point your contacts stop being people you remember and become rows. Customers, leavers, competitors and your own test address sit in one table, and the default is to send all of it the same email. Engagement drops, fewer of your messages arrive, and when you have one hour to follow people up you write to whoever is newest. You cannot even say which kind of customer converts best, because the base was organised to be sent to, not to answer questions.
None of them is "personalisation is the future".
A message written for one recognisable situation can be specific in a way a message for everyone never is. It is the only way to sound personal to a thousand people when you are the one writing.
Location and age describe. What predicts the next action is whether someone is the kind of person you serve, and what they have done lately.
Silent contacts, bounces and duplicates earn nothing and teach inbox providers your mail is unwanted. Excluding them makes you a healthier sender.
Which kind of contact becomes a customer most often. Which source sends people who engage and which sends people who vanish. Those decide where your next month of evenings goes.
A segment is a written definition. The marketer and the seller in you stop arguing by mood and start agreeing by rule.
Someone who visited your pricing page this morning is not the person who did so months ago. Segments that move on their own let you act while the moment is fresh.
Rules that talk to everyone else for you.
An afternoon on the scheme and thirty minutes a month on the upkeep. In return, a base that tells you who to talk to, and rules that work while you are asleep. The closest a one-person business gets to having staff.
Five parts, in order.
Six mechanisms you can pull on purpose, and the honest limit: segmentation multiplies work, and a segment of a dirty base is a precise wrong answer.
Fields versus tags, facts never feelings, a naming convention, fit versus behaviour, dynamic versus static, and lifecycle stage as the backbone.
Five segments, not fifty. One-sentence definitions, checking who will actually receive, duplicates, retiring the stale, test contacts and consent.
Different messages per segment, segments that start things, a selling queue instead of a list, rules that silently stop working, and measuring by segment.
Before you tag anything, building and sending, and the monthly hygiene pass. Each line is a box you either can or cannot tick.
Nine ways a contact base turns from an asset into a landfill. All of them are failures of definition and upkeep, not of technology.
Pick one segment you would send to and say it in a sentence. If you cannot, you do not know what it is for, and the rule would be an accident of whichever filters were nearest.
Who matches the segment, and who will actually receive. The gap is consent, suppression and duplicates. A large gap is the base telling you it needs cleaning.
Put the monthly hygiene pass in the calendar as a fixed appointment. A base cleaned monthly stays trustworthy. One cleaned yearly becomes a project you never find the weekend for.
- You run a one-person business and your contact list has outgrown your memory.
- You want rules that run while you are not working, not more hours at the keyboard.
- You are willing to spend an afternoon on the scheme before you tag anything.
- You want a method with checklists, not a theory of marketing.
- You want to slice your list by age and city because the form collected them.
- You want thirty segments. The guide says five is plenty for most one-person businesses.
- You expect segmenting to repair a base full of duplicates and stale records.
- You want a tool recommendation. The guide is about definitions and upkeep.
Sort them by what they are about to do.
When you are on your own, your list is the closest thing you have to a sales team. Whether it says the right thing to each person is decided long before any email is written. Then say the right thing, once, to the right people.
Luis Gonçalves
Twenty years in digital product development. Led the agile transformation at Nokia. Teaches at Porto Business School. Has spent the last decade working with founders across Saudi Arabia, Portugal, Brazil, and the broader emerging-market startup ecosystem.
He calls himself the Dark Entrepreneur because he believes the founder world is allergic to honesty. No success theater. No highlight reels. Just the real work that has to happen.