Email Marketing Bible

Email Marketing Bible, Chapter 3: Grow your list

Your list is the top of the whole funnel. What signup rates to expect from each form type, why buying a list is the longest path, and the one question at signup that makes every later email land.

CN

Cyril Nie

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7 mins read
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Your list is the top of the whole funnel. Grow it the right way, and everything after gets easier. And relevance is what keeps people on it: 56% of subscribers who unsubscribe say they left because the content wasn’t relevant to them.

Rule one: never buy a list

Just don’t. Bought lists bounce 20–40% of the time (a healthy list bounces under 2%). They are full of spam traps. They will wreck your sender reputation. Fixing that takes 3–6 months, a new domain, and a list rebuilt from scratch. The shortcut is the longest path.

How people actually join your list

Forms and popups on your website do most of the work. Here is what good looks like:

Form typeAverage signup rateTop 10%
Timed popup (8–15 seconds)2–4%9%+
Exit popup (as they leave)4–7%12%+
Scroll popup (halfway down)2–5%8%+
Squeeze page (one job: sign up)20–30%
Footer form0.1–0.5%

If your popup gets less than 2%, something is wrong. Usually it fires too early, the offer is weak, or it asks for too much (name + email + phone = too much friction). Ask for the email. Maybe a first name. That’s it.

Ask people about themselves

The best data is data people give you. Ask one question in your welcome email: “What are you here for?” Tag people by their answer. This one step can double how well your later emails convert, because the content fits the person. Quizzes, surveys, and preference pages work the same way. People trust you more when you ask instead of guessing.

Three more ways to get people to tell you about themselves. A quiz (“what type of X are you?”) — people want to know which type they are, so lots of them finish it. A choices page where they pick topics and how often they hear from you. And one question after they buy: “what made you decide?” or “what will you use this for?” Answers people give you beat answers you guess. Someone who says they care about the planet really does. Someone who clicked one green product may have just been looking around. Asking also builds trust. It says you would rather know than assume.

Give people a dial, not just an exit

When someone clicks “unsubscribe,” show a preference page first: fewer emails, or only certain topics. 20–30% of people will turn the dial down instead of leaving. That is a lot of saved subscribers. Remember: your list naturally shrinks 22–25% a year as people change addresses and lose interest. You need about 2% new signups a month just to stay flat.

Common questions

Is it legal to buy an email list?

Buying a list is legal in some jurisdictions but it is always a bad idea. The recipients never consented, so complaint rates spike, inbox providers learn to filter your domain, and the damage carries over to the people who did opt in.

What is a good email signup conversion rate?

Two to five percent of site visitors is a normal range for a well-placed signup form. Offers tied to intent, such as a discount at checkout or a guide on a relevant article, convert several times better than a generic newsletter box in the footer.

How do you grow an email list without paid ads?

Place forms where intent already exists: exit intent on product pages, inline within relevant content, at checkout, and after support conversations. Offer something specific rather than a generic invitation to subscribe for updates, and ask a profiling question so the first email can already be relevant.

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