Once your list has more than a handful of people, you’ll notice they didn’t all join for the same reason. Some came for a free checklist, some bought something, some signed up two years ago and haven’t opened an email since. Sending everyone the exact same message works for a while. Then it starts to feel like shouting into a crowded room.
Segmentation is the fix, and it sounds more technical than it is. Mailchimp’s beginner guide makes the same point: the word is the hardest part. It just means sorting subscribers by something they have in common so you can send the right email to the right people.
Keep One List, Then Sort Inside It
A common beginner mistake is creating a separate list for every freebie or product. The same person ends up on three lists, may get the same email three times, and it gets hard to tell who unsubscribed from what.
A cleaner setup is one main list, organized with labels and filters. Kit (formerly ConvertKit), for example, is built around exactly that: everyone lives in one list, and tags and segments do the sorting. Mailchimp works on a similar idea with its audience, tags and segments. The names differ between services, but the two building blocks show up almost everywhere.
Tags vs. Segments: The Two Tools You Need
Tags Are Fixed Labels
A tag is a label you stick on a subscriber, like “Downloaded budget template” or “Bought ebook.” In Kit’s description, a tag stays on someone until you or an automation removes it, and one person can carry many tags. Tags can be added by hand, by the form someone used to sign up, by a link they click, or by an automation.
Because tags are fixed, they’re good for facts that don’t change on their own: what someone signed up for, what they bought, or a topic they told you they care about.
Segments Are Saved Filters
A segment is a group defined by rules, such as “has the Bought ebook tag” or “joined after June 1.” Kit describes segments as fluid: people move in and out automatically as they start or stop matching the conditions. If a new person buys, they show up in your “Buyers” segment without you lifting a finger.
Segments are handy for combining things. Instead of creating a new tag for “people interested in templates or courses,” you can build one segment that includes both existing tags.
Which to Use When
- Use a tag to record a fact about someone or to start an automation. In Kit, segments can’t trigger automations, but tags can.
- Use a segment to build a mailing group from several conditions, like tags plus a sign-up date or location.
- If you find yourself creating tags that just combine other tags, make a segment instead. Kit specifically warns about “tag clutter.”
Three Segments Worth Setting Up First
You don’t need a complicated system. Start with the groups that change what you’d actually say:
- By how they joined. Tag people by the freebie or page they signed up through. Someone who grabbed a meal-planning printable probably wants different follow-up than someone who downloaded a pricing worksheet.
- Buyers vs. not-yet-buyers. Tag customers when they purchase. Then you can exclude them from a sales email for something they already own, which is basic courtesy and keeps complaints down.
- By engagement. Some services group people by how often they open or click. Mailchimp, for instance, offers prebuilt segments for contacts who engage often, sometimes or rarely. That makes it easier to re-engage quiet subscribers or clean them out later.
A Simple Naming Habit Saves You Later
Tags pile up fast. Pick a short naming pattern now and stick with it. For example, start every tag with its type: “Source: budget template,” “Bought: starter ebook,” “Interest: AI tools.” Six months from now you’ll know at a glance what each one means and whether it’s still useful.
Write the naming pattern down in a simple note or spreadsheet, along with what each tag is for and what adds it (a form, a link, an automation). That note is what lets you change things later without breaking a welcome sequence you forgot was connected.
Once a quarter, skim your tag list and delete anything you no longer use. It takes ten minutes and keeps your setup understandable.
Don’t Overdo It
Segmentation helps when the difference between groups changes the message. If you only have one offer and one newsletter, two or three tags are plenty. Every segment you create is another version of an email you might feel obliged to write, and your evenings are limited. Add complexity only when you have a clear reason.
Do This Today
Open your email service and add one tag to every sign-up form you have, named for where the subscriber came from (for example, “Source: homepage form”). From now on, every new subscriber will arrive already sorted.
More on Totally Relentless
- Why Your Side Business Needs an Email List, Even a Tiny One
- How to Write a Welcome Email That Sets the Right Expectations
