If you are about to launch a SaaS product and you are not sure which emails to wire up first, this SaaS email automation checklist is the answer. Not a list of every email you will eventually need. The specific tracking setup and lifecycle emails that matter before anything else, in the order you should build them.
Build in the right sequence or the foundation breaks.
Most founders try to set up email automation in the wrong order. They pick a subject line before they know who is getting the email. They write a 30-day onboarding drip before they have tracked a single in-app event. They build a churn prevention flow before they have defined what activated means. The result is a set of emails that fire at arbitrary times to users they cannot tell apart.
The right order is: tracking first, segmentation second, emails third. No lifecycle email is better than the event data powering it. An onboarding sequence built on a reliable activation event is a completely different thing from a seven-day drip sent to everyone. The first one adapts. The second one guesses.
This checklist is split into two phases: the event tracking setup you need before you write a single email, and the lifecycle emails to build in priority order. Skip nothing in Phase 1. You will regret it when you try to branch in Phase 2.
Phase 1: Event tracking setup: do this before writing a single email.
Your email automation is only as smart as the product events feeding it. These five steps are the minimum viable tracking setup for a launching SaaS.
Install the SDK or wire the HTTP Events API.
Before anything else, get events flowing. GetFluxly gives you two paths: a JavaScript SDK (@getfluxly/browser) for the browser, which auto captures pageviews, clicks, and forms; and an HTTP Events API for server side signals like signups, billing events, and internal state changes. Both write to the same customer profile, so a server side signup event can still fire an onboarding email. Do not skip this step and try to work backwards from a CSV.
Fire the signup event with identity.
The first event you need is signup, sent from your backend at the moment a user creates an account. Include the user ID, email, and any traits you know at that point: plan, referral source, company. This is the anchor for every lifecycle email you will send. Without a clean, server side signup event, your onboarding automation has no reliable starting gun.
Define and fire your activation event.
Pick the one action that best predicts whether a new user will stick around. For most SaaS products it is something like: created first project, connected first data source, sent first message, or invited a teammate. This event is the hinge your entire onboarding sequence turns on. Activated users need a different email than stalled ones. Fire it from the server side so it is reliable and cannot be blocked by a browser extension.
Track the key feature used event for your core feature.
One event per core feature, named in past tense with a consistent pattern: report_created, integration_connected, team_member_invited. This naming discipline pays off the moment you start building segments. You will use these events to skip emails for users who already did the thing, and to trigger emails for users who have not.
Set up anonymous to identified stitching.
A user who clicks a marketing email, signs up, and then uses your product on a different device should resolve to one profile. Make sure you are calling identify with the same user ID you use on the backend. GetFluxly resolves identity project-scoped, so the same person across your marketing site, app, and docs becomes a single unified profile.
GetFluxly's product event tracking guide covers event naming, the identify call, and how to plan a tracking schema before you write a single line of instrumentation code. Read it alongside this checklist.
Phase 2: The lifecycle emails to build, in order.
These six emails cover the entire arc from first signup to churn risk. Build them in this order. Each one depends on the tracking from Phase 1, and each one feeds into the next.
Welcome email, triggered on signup.
Send within two minutes of the signup event. Keep it short. One sentence on what GetFluxly does, one sentence on what to do first, one CTA button. The welcome email is not the place for a product tour. Its only job is to confirm the signup, set expectations, and give the user a single obvious next step.
Activation nudge, triggered 24 hours after signup if the activation event has not fired.
If a user signed up but has not hit your activation milestone, send one email 24 hours later with a single, concrete action. Not a list of everything they can do. The one thing they need to do to get value. Link directly to the step, not to the dashboard.
Post-activation success email, triggered on the activation event.
This email fires when a user crosses the activation milestone. It should feel like a small celebration and a bridge to the next step. If activation is creating a first project, the post-activation email says great, here is how to get more out of it. Do not wait a day. Send it within minutes of the event.
Trial conversion sequence, starting at day 7 of the trial.
Every new GetFluxly account gets a 14 day trial. You should model your trial the same way. Build two tracks: one for activated users who need a nudge to upgrade, and one for stalled users who need to reach value before they will pay. A stalled user does not need a pricing page link. They need the activation email they never got. See the full breakdown in our guide to SaaS trial conversion emails.
Trial expiry warning, 48 hours before end of trial.
This is the most important email in the trial sequence and the most often skipped. Send it 48 hours before the trial ends, addressed to the user by name, and be specific about what happens when the trial expires. No vague "your trial is ending soon" language. Tell them exactly what they lose and what it costs to keep it.
Churn risk email, triggered by 7 days of inactivity after prior activation.
If a previously active user stops logging in, fire a gentle check-in at day 7 of silence. Not a promotional email. A single, low-friction question: is there anything blocking you? This email is not trying to sell an upgrade. It is trying to find out why someone went quiet, which is almost always more valuable.
The emails you can build once the core is live.
Once the six emails above are live and working, there are obvious next moves. A full onboarding email sequence that teaches one feature at a time, triggered by behavior, not a timer. A user activation email that specifically targets the activation milestone for users who are close but have not crossed it. A win-back sequence for users who cancelled. Dunning for failed payments.
But none of those work without the foundation in Phase 1 and Phase 2. If you try to build a dunning sequence before you have a reliable signup event, you will spend more time debugging the tracking than writing the emails.
The lifecycle email automation guide covers all of these stages in depth, with the behavioral triggers and branching logic for each one. Use this checklist to get started fast, then use the lifecycle guide to go deeper.
For the commercial side, the GetFluxly vs Customer.io comparison lays out how the two tools differ in how they handle product event triggers, profile stitching, and pricing for small teams. Worth reading before you make a tool decision.
Connecting an ESP to your automation.
GetFluxly sends through the ESP you already use: Resend, Mailgun, AWS SES, or any custom SMTP relay. You bring your own sender. Native sending under the GetFluxly Mail brand is coming soon, but today the model is bring your own provider and plug it into the automation builder. If you do not have an ESP yet, Resend is the most common choice for early-stage SaaS and takes under 10 minutes to set up.
Send outcomes flow back into the customer profile, so a click, open, or bounce becomes a signal you can use in a later branch or segment. That closes the loop between what you send and what users do next.
Ready to wire it up? The email editor and automation builder are available on every plan. See pricing for what is included on each tier.
SaaS email automation checklist, answered.
What emails should I set up first for a SaaS launch?
In order: welcome on signup, activation nudge at 24 hours if the user has not activated, post-activation success email on the activation event, and a trial expiry warning 48 hours before the trial ends. Those four cover the highest-impact moments in a new user's first two weeks. Everything else can come after you launch.
Do I need to track product events before I can send lifecycle emails?
Yes. At minimum you need a signup event and an activation event. Without those two, your onboarding sequence has no starting gun and no branch logic. You cannot send a different message to activated users versus stalled users if you cannot tell them apart.
How many lifecycle emails should a new SaaS have?
Start with five to six. Welcome, activation nudge, post-activation, trial day 7 nudge, trial expiry warning, and a churn risk check-in for users who go quiet. That covers the full new-user arc without overwhelming a solo founder trying to ship everything else at the same time.
What is the activation event in a SaaS email automation checklist?
The activation event is the one in-product action that best predicts whether a user will retain. It is different for every product: it might be creating a first project, connecting a data source, or sending a first message. Define it before you write a single email. Every email in your onboarding sequence pivots on whether the user has hit it.
Can I set up email automation without a developer?
For the simplest flows, yes. If your app already fires signup events to a backend, you can connect GetFluxly via the HTTP Events API and build the whole onboarding sequence in the automation builder without writing additional code. The harder parts, like firing activation events from the right place in your product, still require one developer session to instrument correctly.
The difference between a SaaS that loses users in week one and one that retains them is usually not the product. It is whether the right email arrived at the right moment. This checklist gives you the minimum setup to make that happen, in the right order, without overbuilding before you have launched.