# SaaS email strategy: from sign-up to win-back

> The full map of SaaS and app emails, from sign-up to win-back, with the goal, trigger and metric of each one. With real examples.

Source: https://couryo.com/en/blog/saas-email-strategy-lifecycle · Published 2026-10-21

You pay for a visitor, they sign up, and from then on they get three unrelated emails: a confirmation, a generic "welcome" and, weeks later, a promotion. None of them knows what the person did in your product. The result is predictable: most never reach their first result, and the ones who do forget about you before they pay.

This article is the map. It covers the nine kinds of email a SaaS or app needs, when each one fires, what it should cause and how to measure it. The examples come from real Wunka products (Mentezinha, Renderster, SunoBoard and ViralRecast), which send through Couryo. Each kind has its own article with templates.

## The principle: every email answers a behavior

The most common mistake is planning email by calendar ("every Tuesday we send news"). What works is planning by **behavior**: the person did, or did not do, something, and the right email arrives because of it.

In practice:

1. **Your app reports what happened.** Sign-up, first use, limit reached, checkout started, subscription cancelled. Each one becomes an event.
2. **Every sequence starts on one event and ends on another.** Activation starts at sign-up and ends when the person activates. Abandoned checkout starts when they open checkout and ends when they pay.
3. **Nobody gets what no longer makes sense.** Someone who activated never gets "you haven't started yet". Someone who paid never gets "finish your upgrade".

## The map: nine emails, nine moments

| Moment | Email | Goal | Main metric |
|---|---|---|---|
| Right after sign-up | Address confirmation | prove the address exists | % confirmed |
| First minutes | Welcome | show the first step | click on the first step |
| Days 1 to 7, not activated | Activation | remove the first-use blocker | % who activate |
| After activation | "Did you know?" per feature | deepen usage | use of the feature shown |
| Free plan limit | Limit reached | show what the paid plan adds | upgrades |
| Trial ending | Trial end | decide before losing access | trial conversion |
| Checkout opened, not paid | Abandoned checkout | answer the doubt that stopped them | recovered payments |
| Dates of the year | Seasonal campaign | give a reason to come back now | clicks and conversions |
| Weeks without use | Win-back | bring them back, or let them go | return to the product |

Look at the metric column: almost none is open rate. Since Apple Mail started opening emails on its own to protect privacy, opens stopped being reliable. Measure what the person does after the click.

## 1. Confirmation: the front door

Confirmation protects your list from wrong addresses and makes sure the person gets everything else. Mentezinha, a Wunka learning app for kids, sends a confirmation first and, if it is not confirmed, one short reminder ("Your Mentezinha account is waiting").

A lesson learned the hard way: confirmation reminders to mistyped addresses come back as bounces. At Linkezera, another Wunka product, a confirmation reminder sent repeatedly to sign-ups with typos pushed the project's bounce rate above the healthy limit, and the reminder was paused. The fix was at the source: validate the address at sign-up and send at most one reminder. You can check any address for free with the [email verifier](https://couryo.com/en/tools/email-verifier).

## 2. Welcome: the first step, not a tour

The welcome email gets the most attention of all, because the person just asked to come in. Use it for one thing: the first step. ViralRecast's subject is direct: "Your ViralRecast account is ready". Full templates in [Welcome email examples](https://couryo.com/en/blog/welcome-email-examples).

## 3. Activation: signed up, never used

This is the biggest hidden win. The person wanted the product but stopped somewhere: no first project, no teammate invited, no first send. Activation emails target that exact point. Mentezinha sends different emails for "empty class" and "no child added", on day 1, day 3 and day 7, each with one concrete idea. Details and templates in [Activation emails for users who signed up and never used it](https://couryo.com/en/blog/activation-emails). For the full onboarding sequence, see [SaaS onboarding email sequence](https://couryo.com/en/blog/saas-onboarding-email-sequence).

## 4. "Did you know?": one feature per email

Active users usually know a third of your product. Renderster, a Wunka video product, sends one email per feature, always with the person's first name and one sentence: "{{name}}, did you know? Your photos become a video with music, just ask". One feature, one example, one button. See [Feature nurture emails](https://couryo.com/en/blog/feature-nurture-emails).

## 5. Limit reached: the most honest moment to sell

When someone hits the free plan limit, they just proved they use the product. It is the best time to show the paid plan, without pressure. SunoBoard, a Wunka music app, runs a short sequence: first what the free credits produced, then what other creators are making, and finally when credits reset ("or keep creating today"). The person chooses between waiting and paying, with the facts in hand.

## 6. Trial ending

If your product has a free trial with a card, two emails matter most: one for people who started checkout and stopped ("one step left to your trial") and one two days before the trial ends. Both are in [Free trial ending emails](https://couryo.com/en/blog/free-trial-ending-email).

## 7. Abandoned checkout

Opening checkout and not paying is almost always a doubt: price, commitment, fear of not being able to cancel. SunoBoard answers that in two emails: "You're almost there, finish upgrading to Pro" and then "What you get with Pro (and how to cancel anytime)". No fake countdown. See [Abandoned checkout email for SaaS](https://couryo.com/en/blog/abandoned-checkout-email-saas).

## 8. Seasonal campaign

Dates give people a reason to come back now. In October 2026, Wunka products ran very different Halloween campaigns: a music challenge at SunoBoard, a roundup of viral posts at ViralRecast and a folklore activity for teachers at Mentezinha. November brings Black Friday. The full plan is in [Black Friday and seasonal email campaigns](https://couryo.com/en/blog/black-friday-email-saas-apps).

## 9. Win-back

People who left do not need "we miss you". They need a new reason. ViralRecast wins users back with a use case they may not know ("Your competitor's ads, inside ChatGPT"). And if they do not come back, your list is better off when you stop insisting. See [How to win back customers who went quiet](https://couryo.com/en/blog/win-back-email-campaign).

## Transactional and marketing: never in the same bucket

Confirmation, password reset, billing notices and "your video is ready" are **transactional**: the person needs them even after leaving your newsletter. Campaigns, "did you know?" and win-back are **marketing**: they need one-click unsubscribe and must respect people who left.

Mixing both is the fastest way to send your password reset to spam. Keep separate streams with separate suppression: unsubscribing from marketing never blocks transactional. In Couryo that is [suppression per stream](https://couryo.com/en/docs/suppressions.md).

## How much and when: the rules that protect the list

- **At most one sequence email every 12 hours per person**, across all sequences.
- **Quiet hours:** nothing between 9 pm and 8 am. The email waits for the morning.
- **Automatic exit:** whoever converts, unsubscribes, bounces or complains leaves every sequence at once.
- **Cold lists hurt delivery.** Before emailing people who never got anything from you, start with the most engaged.

## How to build it with Couryo

Everything on this map runs on Couryo with no per-contact fee:

- **Events:** your app sends `user.signed_up`, `checkout.started`, `limit.reached` with `POST /v1/events` (see [Contacts and events](https://couryo.com/en/docs/contacts.md)).
- **Event-triggered sequences** with waits, conditions (opened, clicked, replied, event happened) and a **conversion event** that removes the person when they do what you wanted ([Sequences](https://couryo.com/en/docs/sequences.md)).
- **Campaigns** for segments by attribute, tag, topic and sign-up, open and click dates ([Campaigns](https://couryo.com/en/docs/campaigns.md)).
- **Topics and a preferences page**, so people choose what they get instead of leaving everything.
- **Automatic warm-up** for new domains, and campaigns pause on their own if bounces cross the limit.

Sequences and campaigns are part of the Automations add-on on Pro (US$ 9 a month) and included in Scale. The Free plan has 3,000 emails a month to get started.

## FAQ

### Where do I start if I have no automated emails at all?

Start with confirmation, welcome and activation. Those three move results the most, because they reach the person at peak interest. The rest comes once you know what your activation is.

### How many emails can someone get per week?

There is no magic number, but one rule protects the list: at most one sequence email every 12 hours, and every email needs a reason tied to what the person did. If you cannot say why they are getting it, do not send it.

### Is open rate still useful?

As a trend, not an exact number. Apple Mail opens emails on its own to protect privacy, which inflates opens. Measure clicks and, better, what people do in the product after the click.

### Do I really need to separate transactional and marketing in a small product?

Yes. It keeps password and billing emails arriving even for people who left your newsletter, and stops a campaign with complaints from dragging transactional into spam.