Definition
An email sequence is a predetermined series of automated emails sent to subscribers based on triggers, timing, or behaviour. Unlike broadcast emails (sent once to the entire list), sequences are individual journeys that each subscriber experiences based on when they joined or what actions they took.
Email sequences form the foundation of marketing automation. They allow businesses to deliver the right message at the right time without manual intervention, scaling personalised communication across thousands of subscribers.
Types of Email Sequences
| Sequence Type | Trigger | Typical Length | Goal |
|---|---|---|---|
| Welcome sequence | New subscriber | 3-7 emails | Onboarding, first purchase |
| Nurture sequence | Lead magnet download | 4-10 emails | Education, trust building |
| Abandoned cart | Cart abandonment | 2-4 emails | Recover sale |
| Post-purchase | Purchase completed | 3-6 emails | Upsell, retention |
| Win-back | 60-90 days inactivity | 3-5 emails | Re-engagement |
| Replenishment | Time-based from purchase | 2-3 emails | Repeat purchase |
| Onboarding | Account creation | 5-10 emails | Product adoption |
Average Benchmarks
| Metric | Welcome Sequence | Nurture Sequence | Abandoned Cart |
|---|---|---|---|
| Open rate | 40-60% | 25-40% | 35-50% |
| Click-through rate | 15-30% | 8-20% | 10-25% |
| Conversion rate | 5-15% | 3-10% | 5-15% |
| Email 1 performance | Highest | Highest | Highest |
| Optimal email count | 4-5 emails | 5-7 emails | 3 emails |
How to Structure an Email Sequence
- Define the goal: Every sequence needs a clear outcome. A welcome sequence might aim for a first purchase. A nurture sequence might aim for a demo booking. The goal determines the content and length.
- Plan the timing: Space emails to maintain engagement without overwhelming the subscriber. Welcome sequences typically start with 1-2 day gaps and widen over time. Re-engagement sequences often start with a gap of 1-2 weeks.
- Include logical progression: Each email should build on the previous one. Early emails educate and build trust. Later emails introduce offers and move toward conversion. Do not send the same message repeatedly.
- Set exit conditions: Define what removes a subscriber from the sequence. Completing the desired action, unsubscribing, or becoming inactive should end the sequence.
- Design for mobile: Most sequence emails are read on mobile devices, especially welcome emails and other early-sequence messages. Single-column layouts, large fonts, and thumb-friendly buttons improve performance.
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Related Glossary Terms
A/B Testing
A/B testing in email marketing is the practice of sending two variations of an email to a small sample of your list to determine which version performs better before sending the winner to the remaining subscribers.
Abandoned Cart Email
An abandoned cart email is a triggered message sent to online shoppers who added items to their cart but did not complete the purchase.
Abandoned Cart Sequence Flow
An abandoned cart sequence is an automated flow of emails that reminds shoppers who left items in their cart, over several sends, to return and complete their purchase.
Abandoned Cart Email
An abandoned cart email is an automated message sent to customers who added items to their online shopping cart but left without completing the purchase. It is one of the highest-converting email types in ecommerce.
Account-Based Marketing Email
An account-based marketing email is a highly targeted message sent to a specific organisation or decision-maker group as part of a focused B2B strategy.
AI Email Summary
An AI email summary is a short, machine-generated overview of an email's key points, shown by Gmail, Outlook and Apple Mail before a recipient opens the message. It is reshaping how email marketers think about subject lines, preview text and open rates.
Frequently Asked Questions
The terms are often used interchangeably, but a drip campaign typically refers to a time-based sequence sent at predetermined intervals regardless of subscriber behaviour. An email sequence can include both time-based and behaviour-based triggers. All drip campaigns are sequences, but not all sequences are drips.
Welcome sequences typically perform best with 4-7 emails. Nurture sequences may run 5-10 emails. Win-back sequences work well with 3-5 emails. The ideal length depends on your goal, audience, and offer. Test shorter versus longer sequences to find your optimal length.
No. Subscribers who take the desired action early (e.g. make a purchase during a welcome sequence) should exit the sequence and enter a different post-purchase journey. Sequences should have clear exit conditions that remove subscribers once the goal is achieved.
Track completion rate (what percentage of subscribers reach the end), conversion rate (what percentage complete the goal), per-email engagement (opens, clicks, unsubscribes), and drop-off points (where subscribers stop engaging). A high drop-off rate between two specific emails suggests a content or timing problem.
A sequence should have one primary goal. Including multiple goals dilutes focus and reduces conversion rates. If you have multiple objectives, create separate sequences for each and use subscriber behaviour to determine which sequence they enter.