Most email lists are one big undifferentiated blob. Everyone gets the same newsletter, the same launch email, the same discount code. Open rates drift down, unsubscribes drift up, and the standard advice arrives: you should segment your list.
Fine. Segment it by what?
That is the part nobody answers. You can segment by purchase history if people have bought. You can segment by email behaviour if you have enough sends to read a pattern. But for the large chunk of your list that has signed up and done nothing since, you have an email address and a signup date. That is not a segment. That is a shrug.
A quiz solves this by asking. Instead of inferring what someone cares about from three months of click data, you get them to tell you in ninety seconds, at the exact moment they are most willing to help you get it right.
Why segmentation is worth the effort
The performance gap is well documented. Mailchimp analysed roughly 11,000 segmented campaigns sent by about 2,000 users to nearly nine million recipients and compared them against the same senders' non-segmented campaigns. Segmented campaigns saw 14.31% higher opens and 100.95% higher clicks, with unsubscribes 9.37% lower.
The more interesting number sits further down that page. When people segmented specifically by interest groups - the checkboxes and dropdowns where subscribers declare what they actually want - clicks came in 74.53% higher and unsubscribes 25.65% lower than unsegmented sends. Declared interest is the thing doing the work. A quiz is simply a much better way of collecting it than a checkbox on a signup form.
There is a demand-side argument too. McKinsey's Next in Personalization research found 71% of consumers expect companies to deliver personalised interactions and 76% get frustrated when that does not happen. The same study puts the typical revenue lift from personalisation at 10 to 15%.
And email is where that effort pays back hardest. In Litmus's 2025 State of Email survey of nearly 500 marketing professionals, 35% of marketing leaders reported $10 to $36 back for every $1 spent on email, and a further 30% reported $36 to $50. Improving the relevance of a channel already returning that much is a better use of a week than most things on your list.
Step 1: Decide what you actually need to know
Before writing a single question, finish this sentence: if I knew ___ about a subscriber, I would send them something different.
If you cannot name the different thing you would send, the question is not worth asking. This is the discipline most quizzes skip, and it is why so many of them collect data nobody ever uses.
Three or four useful dimensions for most brands:
| Dimension | What it tells you | What changes in the email |
|---|---|---|
| Stage | Complete beginner or experienced | Educational sequence vs. advanced/new-release content |
| Motivation | Why they came to your category at all | Which benefit leads the subject line |
| Constraint | Budget, time, space, skill | Which products you show and which you never show |
| Style | Cautious vs. adventurous, solo vs. social | Tone, and whether you push community content |
Pick the two or three that genuinely change what you send. Ignore the rest, however interesting.
Step 2: Write questions people enjoy answering
The difference between a quiz and a survey is that a quiz gives something back. Nobody completes a form that only benefits the sender.
A few rules that hold up in practice:
- Ask about situations, not attributes. "What normally goes wrong when you try this at home?" outperforms "What is your skill level?" People are poor at self-rating and good at recognising their own circumstances.
- Keep it to five to seven questions. Long enough to sort meaningfully, short enough to finish. If you need more than seven, you are trying to do research rather than segmentation.
- Make every option a real answer. If one option is obviously the right one, everyone picks it and you learn nothing.
- Give the result away for free. The result is the payment for the answers. If the result is gated behind an email address before it is shown, completion drops. More detail on this in our guide to getting customers to complete your quiz.
Step 3: Map results to segments before you launch
This is where most quizzes fall apart. The quiz gets built, it gets responses, and nobody has decided what happens next.
Do the mapping on paper first. For every result type, write down:
- The segment name in your email platform
- The welcome email that result triggers
- The two or three things that segment gets sent over the following month
- The thing that segment should never be sent
That fourth line matters more than the other three. Segmentation only creates value when you are willing to withhold something from someone. If every segment eventually receives everything, you have built a tagging system, not a strategy.
Keep the number of result types small. Four or five is plenty. Ten segments means ten content tracks and you will maintain three of them.
Step 4: Wire the tags into your email platform
Mechanically this is the easy bit and it works the same way almost everywhere.
- Mailchimp: pass the result as a merge field or apply a tag on signup, then build segments on that tag.
- Klaviyo: write the result to a custom profile property, then use it as a flow trigger and a segment condition.
- ConvertKit / Kit: apply a tag per result and use tag-based automations.
- HubSpot: write to a custom contact property and use it in list criteria.
Two things worth doing while you are in there. First, store the individual answers, not just the final result type. The result is a summary; the answers are the raw material, and in six months you will want them. Second, store the date. Preferences move, and a two-year-old quiz answer should not be driving today's send.
Step 5: Change the emails, not just the labels
The failure mode here is subtle and extremely common. Brands segment carefully, then send all segments the same email with a different first name at the top.
Aim for one of these three levels, in ascending order of effort:
- Different subject line and opening paragraph, same body. Cheap. Still worth doing.
- Different products, examples or case studies inside a shared template. The best effort-to-return ratio for most small teams.
- Genuinely different sequences per segment. Worth it for your two largest segments only.
Start at level two for everyone, and let the results tell you which segment deserves level three.
What you end up with
Run this properly and you have not just segmented an email list. You have built a structured record of what your customers want, in their own words, that you own outright and did not rent from an ad platform. That is zero-party data, and it gets more valuable as third-party tracking continues to degrade.
It also feeds everything else. The same answers that route your emails will sharpen your ad copy, your product recommendations, and eventually your customer personas. One quiz, several jobs.
The list you have right now already contains distinct groups of people with different problems. They are just invisible because nobody has asked. Ask.
Ready to build one?
Profyl helps brands create short persona quizzes that sort respondents into clear audience types and turn the answers into usable segments and insight - no research agency required.
Related reading: How to Create a Customer Persona Quiz · How to Build a Product Recommendation Quiz That Also Builds Personas · What Is Zero-Party Data?