Email automation
Email marketing automation
Email automation sends the right email when something happens, without anyone pressing send. A new subscriber receives a welcome, a customer who leaves a basket gets a reminder, a buyer receives care tips after delivery, a lapsed customer gets a check-in. Each of these is a flow: a trigger that starts it, a series of emails with waits between them, and rules that stop it when it has done its job. Built carefully, flows keep working in the background while your team focuses on campaigns.
This guide explains how flows work, which to build first, consent, exit rules, testing and keeping flows healthy.
Illustrative diagram
- Trigger
- Email 1
- Wait
- Email 2
- Exit
How a flow works
Every flow has three parts. The trigger is the event that starts it: someone joins the list, places an order, leaves a basket or has not bought for a set time. The steps are the emails and the waits between them, sometimes with branches, so a customer who clicked receives something different from one who did not. The exit rules stop the flow when it is no longer relevant: the customer bought, unsubscribed or entered a more important flow. Missing exit rules can lead to embarrassing automated emails, such as a basket reminder after the order arrived.
Common flows and their triggers
| Flow | Trigger | Main exit |
|---|---|---|
| Welcome | Joins the list | Series complete |
| Basket reminder | Basket left without checkout | Order placed |
| Post-purchase | Order delivered | Series complete |
| Win-back | No order for a set period | Order placed |
| Onboarding | Account created | Key action completed |
Which flows to build first
Start with the flows closest to a moment of interest. For many businesses that means a welcome flow, because every new subscriber passes through it. Online shops might add a basket reminder and a post-purchase flow next. Service businesses might add an enquiry follow-up instead. Build one, check it works and watch results for a few weeks before adding the next. Three well-built flows do more than ten that nobody maintains.
Consent in automated emails
Automation does not change the rules. The ICO's guidance says marketing email to individuals needs consent or the soft opt-in, and every message must identify the sender and offer an opt-out. Flows should check marketing consent before sending, and contacts who unsubscribe should leave every marketing flow at once. Some emails triggered by actions, such as order confirmations, are part of the transaction rather than marketing; if a flow mixes the two, ask your adviser how it should be treated.
Building a flow
Map
Trigger, steps, waits, branches and exits on one page.
Output: Flow map
Write
One purpose per email.
Output: Copy
Build
Flow set up in your platform.
Output: Draft flow
Test
Test contacts run through every branch.
Output: Test record
Switch on
Live, with results watched.
Output: Live flow
Example: three flows for a candle shop
Illustrative example — not a client case study
Situation: A candle shop sends campaigns but nothing happens automatically after a sign-up or order.
- A three-email welcome flow introduces the shop, its scents and how to care for candles.
- A basket reminder is set to stop as soon as an order is placed.
- A post-purchase email with burning tips follows delivery.
What this shows: New subscribers and customers heard from the shop at the right moments. This example is illustrative.
When flows overlap
A new subscriber may join the list, leave a basket and place an order within a day, triggering three flows at once. Decide which flows take priority and whether a contact can be in more than one at a time. Some platforms let you exclude contacts in one flow from another, or limit how many automated emails anyone receives in a period. Check your platform's documentation for what it supports.
Testing before switching on
Paths
- Every branch tested with a test contact
- Exit rules stop the flow when expected
Content
- Links, images and personal fields correct
- Discount codes valid
Rules
- Unsubscribed contacts excluded
- Consent checked before marketing steps
Keeping flows healthy
Flows break quietly. A product is discontinued but still featured, a discount code expires, a website change breaks a link, or a shop connection stops passing orders so basket reminders go to people who already bought. Review each flow every few months: read every email, check the links, confirm the trigger is still firing and compare results with the previous period.
Measuring flows
Report each flow separately from campaigns. Look at how many people entered, how many completed or exited, clicks and sales or actions per email, and unsubscribes. A step that causes a spike in unsubscribes may be too frequent or off-topic. Opens are a rough indication only, because email apps handle tracking images differently.
Questions about email marketing automation
What is email marketing automation?
Emails sent automatically when something happens, such as a sign-up or order.
What is a flow?
A trigger, a series of emails with waits and rules that stop it.
Which flow should we build first?
A welcome flow, since every new subscriber passes through it.
Do automated emails need consent?
Marketing ones do, just as campaigns do.
What happens if flows overlap?
Set priorities and exclusions so contacts are not overloaded.
How often should flows be checked?
Every few months, and after website or product changes.
Sources referenced
Platform features, guidance and rules change. We check the current versions before committing to an approach. This page is general information, not legal advice.
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