Activation emails for users who signed up and never used it

Someone signs up, confirms their address, looks at the dashboard and leaves. Three days later, nothing. A week later, they do not remember your product's name. You paid for the click, they trusted you with their email, and the relationship ended before the first result.

Most of the time it is not lack of interest. It is a small, specific blocker: they did not know where to start, a piece of information was missing, it looked like work. Activation emails exist to remove that blocker. This article shows how to find where people stop, how to write one email for each blocker and how to set up the sequence, with real examples from Mentezinha and ViralRecast, two Wunka products that send through Couryo.

First: where do people stop?#

Activation is the action that shows the person got the value of the product. Before it there are usually two or three steps. List them and see where most people get stuck.

Mentezinha, a learning app for kids, has two audiences and two stopping points:

• Teachers create a class, but it stays empty: no student joined.
• Families create an account, but never add a child.

Different blockers, different emails. A generic "You haven't started yet!" would serve both and help neither.

Do the same for your product:

One email per blocker, at the right time#

Mentezinha's activation emails show the idea well. These subject lines are real (translated from Portuguese):

Empty class:

Account with no child:

Three details matter:

1. Each subject answers an objection instead of repeating "complete your profile".
2. The tone changes over time: the first shows the way, the middle one shows value, the last offers human help.
3. There is a shortcut: Mentezinha also sends "I already set up a profile for you to try". Instead of asking for work, it hands over a configured product. If your product allows it, that is often the easiest activation.

The content case: show the use, not the feature#

ViralRecast, which reads and summarizes social posts inside Claude and ChatGPT, takes another route in the first days (translated):

The first takes something the person already did and shows three practical uses. The day 7 email turns idle credits into a concrete number of results. None of them talks about features in the abstract.

Templates to adapt#

Email 1 (day 1): the next step

• Subject: the result the step delivers, not the step ("Your clients join with a link, no password").
• Body: one sentence acknowledging where they are, one on why the step matters, one button straight to the right screen (not the home page).
• Length: up to 100 words.

Email 2 (day 3): the value doubt

• Subject: a real usage situation ("An idea for the last 15 minutes of class").
• Body: one concrete example, ideally with a screenshot or a ready template.
• Button: "Do this now".

Email 3 (day 7): the helping hand

• Subject: "Can I help you set it up?"
• Body: short, first person, inviting a reply. Many people are stuck on a question that one reply solves.
• Use an address that actually receives replies.

Rules that prevent the opposite effect#

• Activated users leave. The moment someone completes the step, they exit the sequence.
• Three or four emails at most. If they have not activated in a week, change strategy (win-back, later) instead of insisting.
• Confirmation is not activation. Send a confirmation reminder once. A mistyped address never confirms, and every resend is a bounce that hurts your reputation. Validate addresses at sign-up (the free email verifier catches "gmail.con" and "hotmial.com").
• Right stream. Account onboarding emails can be transactional because they help the person use what they signed up for. Once an email sells a plan, it is marketing and needs unsubscribe.

Which metric to watch#

Not opens (Apple Mail opens emails on its own, which inflates the number). Watch:

• % who activate within 7 days, before and after the sequence;
• button clicks per email, to learn which objection weighs most;
• replies to the day 7 email, which reveal real questions and become new emails.

How to build it with Couryo#

1. Your app sends an event at sign-up: POST /v1/events with user.signed_up (see Contacts and events).
2. Create a sequence triggered by user.signed_up with a conversion event equal to your activation, for example class.first_student. People who activate exit on their own as converted (Sequences).
3. Steps: send, wait 1 day, send, wait 2 days, condition "clicked the previous email", send.
4. Use {{name|there}} for contacts without a name: the email reads "Hi, there!" instead of "Hi, !".
5. Turn on exit_on_reply so people who reply leave the sequence and talk to a person.

Couryo respects quiet hours (nothing between 9 pm and 8 am), at most one sequence email every 12 hours per person, and removes anyone who unsubscribes, bounces or complains. Sequences are part of the Automations add-on on Pro (no per-contact fee) and included in Scale.

FAQ#

How many activation emails should I send?#

Three or four in the first week are usually enough. More becomes nagging. If someone has not activated in seven days, the problem is not a missing email: change the approach or treat them as win-back later.

Should everyone who did not activate get the same email?#

No. Find the step where people stop and write one email per blocker, as Mentezinha does with "empty class" and "no child added". A generic email serves everyone and helps no one.

Is an activation email transactional or marketing?#

Emails that help the person use what they created (set up the account, take the first step) can be transactional. Once the email sells a plan or paid feature, it is marketing and needs one-click unsubscribe.

How do I know the sequence works?#

Compare the share of people who activate within seven days before and after the sequence, and look at clicks per email. Opens are not proof, because privacy protections open emails automatically.