How to Automate Email Marketing with n8n (Complete Guide)
I used to spend hours every week on email marketing tasks that a machine could handle in seconds. Tagging new subscribers, sending welcome emails, segmenting lists based on behavior, scheduling follow-ups — it was all manual, and it was eating my time alive.
Then I connected n8n to my MailerLite account, and everything changed. My n8n email automation now handles the entire subscriber lifecycle without me lifting a finger, from the moment someone signs up to the re-engagement campaign that wins back cold subscribers months later.
In this guide, I will walk you through the exact system I built. You will learn how to automate email with n8n step by step, including subscriber capture, data enrichment, smart segmentation, welcome sequences, and scheduled nurture campaigns. Whether you use MailerLite, Mailchimp, ConvertKit, or any other provider, the principles are identical.
If you are new to n8n, start with my n8n beginner guide first — it covers installation and the basics you will need here.
Why Automate Email Marketing?
Manual email marketing does not scale. Here is what my week looked like before automation:
– Monday: Export new subscribers from my landing page, import them into MailerLite, apply tags manually.
– Tuesday-Wednesday: Write and schedule welcome emails for different segments.
– Thursday: Check who opened what, move people between groups.
– Friday: Identify inactive subscribers, draft re-engagement emails.
That is easily 5-8 hours per week on tasks that follow predictable rules. The moment I realized these tasks were just “if this, then that” logic, I knew n8n could handle all of it.
The benefits of n8n email automation go beyond time savings:
– Speed: New subscribers get their welcome email within minutes, not days.
– Consistency: Every single person goes through the same proven sequence.
– Personalization at scale: Conditional logic lets you tailor content to each subscriber’s behavior without doing it by hand.
– Zero human error: No more forgetting to tag someone or sending the wrong email to the wrong segment.
What We Will Build
By the end of this tutorial, you will have a complete n8n email workflow that handles:
1. Subscriber capture — A webhook receives new signups from your website or landing page.
2. Data transformation and enrichment — Clean, normalize, and enrich subscriber data before it hits your email platform.
3. Smart segmentation — Conditional logic routes subscribers into the right groups based on their source, interests, or behavior.
4. Welcome sequence — Automated emails go out on a timed schedule after signup.
5. Ongoing nurture — Scheduled workflows check engagement and trigger follow-up campaigns.
This is the exact pipeline I run for my own list, and it processes every new subscriber end to end without any manual intervention.
Tools You Will Need
Here is the stack I use and recommend:
– n8n — The workflow automation engine. Self-hosted or cloud, both work. I use the self-hosted version for full control, but n8n Cloud is a great option if you want zero infrastructure management.
– MailerLite — My email service provider of choice. It has a clean API, generous free tier, and solid automation features. That said, this tutorial works with any email provider that has an API — Mailchimp, ConvertKit, Brevo, ActiveCampaign, or even a raw SMTP node.
– A website or landing page — Wherever your signup form lives. This could be WordPress, a static site, Webflow, or a standalone landing page tool.
Optional but useful:
– Clearbit or Hunter.io — For data enrichment (we will cover this).
– Google Sheets or Airtable — As a backup subscriber log.
Step-by-Step: Building Your n8n Email Automation
Step 1: Set Up the Webhook Trigger
Every n8n email workflow starts with a trigger. For subscriber capture, a Webhook node is the most flexible option.
Open n8n, create a new workflow, and add a Webhook node. Configure it as follows:
– HTTP Method: POST
– Path: Give it a descriptive path like new-subscriber
– Authentication: Use Header Auth with a secret token for security
Your webhook URL will look something like:
https://your-n8n-instance.com/webhook/new-subscriber
Point your signup form to POST data to this URL. Most form builders (Typeform, Tally, WordPress plugins) support custom webhook endpoints. The payload should include at minimum the subscriber's email, name, and whatever source or tag data you want to capture.
Test the webhook by submitting your form once. In n8n, you should see the incoming data in the Webhook node output. This confirms the connection is working.
Step 2: Data Transformation and Enrichment
Raw form data is messy. Names come in with inconsistent capitalization, email addresses sometimes have trailing spaces, and you might want to add extra context before the data hits your email platform.
Add a Code node (or a Set node for simpler transformations) after the webhook. Here is what I do with mine:
// Clean and normalize subscriber data
const email = $input.first().json.email.trim().toLowerCase();
const rawName = $input.first().json.name.trim();
const firstName = rawName.split(' ')[0];
const lastName = rawName.split(' ').slice(1).join(' ');
// Capitalize properly
const capitalize = (s) => s.charAt(0).toUpperCase() + s.slice(1).toLowerCase();
return [{
json: {
email: email,
first_name: capitalize(firstName),
last_name: lastName ? capitalize(lastName) : '',
source: $input.first().json.source || 'website',
signup_date: new Date().toISOString(),
tags: []
}
}];
This step matters more than you might think. Clean data means better segmentation downstream, and it prevents duplicate issues in your email provider.
Optional enrichment: If you want to go further, add an HTTP Request node after the Code node to call an enrichment API like Clearbit. You can pull in the subscriber's company, job title, and location -- all useful for segmentation. I do this for my B2B-focused lists but skip it for consumer signups to keep things fast.
Step 3: MailerLite API Integration
Now we push the cleaned subscriber data into MailerLite. Add an HTTP Request node with the following configuration:
- Method: POST
- URL: https://connect.mailerlite.com/api/subscribers
- Authentication: Use your MailerLite API token as a Bearer token in the header
- Body (JSON):
{
"email": "{{ $json.email }}",
"fields": {
"name": "{{ $json.first_name }}",
"last_name": "{{ $json.last_name }}"
},
"groups": ["YOUR_GROUP_ID"],
"status": "active"
}
Replace YOUR_GROUP_ID with the actual group ID from your MailerLite account (you can find this in the MailerLite API docs or by making a GET request to /api/groups).
Tip for other providers: If you use Mailchimp, swap the URL and payload format to match their API. If you use ConvertKit, same principle. The n8n workflow structure stays identical -- only the HTTP Request node configuration changes. This is one of the reasons I love building n8n email workflows: switching providers is a one-node change, not a full rebuild.
Step 4: Conditional Logic for Segmentation
This is where n8n email automation gets powerful. After the subscriber is created in MailerLite, add an IF node (or a Switch node for more than two paths) to route subscribers based on their attributes.
Here is my segmentation logic:
Branch 1 -- Blog readers: If source equals "blog-post", add the tag "content-reader" and assign to the content-focused welcome sequence.
Branch 2 -- Lead magnet downloads: If source equals "lead-magnet", add the tag "resource-downloader" and assign to a more product-focused sequence.
Branch 3 -- Default: Everyone else gets the general welcome sequence.
For each branch, add another HTTP Request node that updates the subscriber in MailerLite with the appropriate tags:
- Method: POST
- URL: https://connect.mailerlite.com/api/subscribers/{{ $json.email }}/groups/{{ GROUP_ID }}
This means a subscriber who downloaded my "n8n Automation Checklist" gets a completely different email sequence than someone who found me through a blog post. Same workflow, different paths, zero manual sorting.
For more complex segmentation with CRM data, check out my n8n CRM workflow guide where I cover syncing subscriber data with your sales pipeline.
Step 5: Scheduled Follow-Ups and Welcome Sequences
MailerLite (and most email providers) can handle drip sequences natively once a subscriber lands in the right group. But I use n8n for follow-ups that go beyond what the email provider can do on its own.
Create a separate workflow with a Schedule Trigger node set to run daily (I run mine at 8 AM). This workflow:
1. Queries MailerLite for subscribers who signed up exactly 3 days ago and have not opened any emails yet.
2. Sends a personalized nudge via a different channel -- for example, I trigger a follow-up through a secondary email or even a Slack notification to myself to reach out personally to high-value leads.
3. Updates tags so the subscriber does not get nudged again.
Here is the Schedule Trigger setup:
- Rule: Every day
- Hour: 8
- Minute: 0
Connect it to an HTTP Request node that calls MailerLite's subscriber search endpoint with a filter for signup date and engagement status. Then process the results through your follow-up logic.
This "check and act" pattern is one of the most useful things about n8n. Your email provider handles the standard drip sequence, and n8n handles the exceptions, edge cases, and cross-channel orchestration that would be impossible to do manually at scale.
Advanced: Behavior-Based Triggers and Re-Engagement
Once your basic n8n email automation is running, you can layer on more sophisticated triggers.
Behavior-Based Campaigns
Set up a webhook in MailerLite (or use n8n's polling) to detect when a subscriber:
- Clicks a specific link in an email -- trigger a workflow that tags them as "interested in [topic]" and adjusts their future content.
- Visits a pricing page -- if you track website events, n8n can catch this via webhook and move the subscriber into a sales-focused sequence.
- Completes a purchase -- automatically move them from "prospect" to "customer" groups and trigger an onboarding sequence instead of sales emails.
Each of these is a separate n8n workflow triggered by a webhook or schedule, and each one modifies the subscriber's tags and group assignments in MailerLite through the API.
Re-Engagement Campaigns
I run a weekly n8n workflow that identifies subscribers who have not opened an email in 60 days. The workflow:
1. Pulls inactive subscribers from MailerLite via API.
2. Sends them a "We miss you" email with a special offer or updated content.
3. If they still do not engage after 14 more days, moves them to a "sunset" list.
4. After 30 days on the sunset list with no activity, unsubscribes them automatically to keep my list clean and my deliverability high.
This automated list hygiene saves me money (email providers charge by subscriber count) and keeps my open rates healthy. Before I automated this, I was paying for thousands of dead email addresses.
Real Results From My Email Automation
I have been running this n8n email automation system for over a year now, and here are the numbers that matter:
- Time saved: Roughly 6 hours per week that I used to spend on manual email tasks. That is over 300 hours per year redirected to content creation and product work.
- Welcome email speed: New subscribers receive their first email within 2 minutes of signing up, compared to the next-day batch I used to run manually.
- Open rates: My segmented welcome sequences consistently hit 55-65% open rates, compared to the 30-35% I was getting with generic blasts.
- List hygiene: Automated re-engagement and sunset workflows keep my list lean. My overall deliverability score improved noticeably after I stopped carrying inactive subscribers.
- Revenue impact: The behavior-based triggers that move engaged subscribers into sales sequences have directly contributed to a measurable increase in conversions from email.
The ROI on setting this up was almost immediate. The initial build took me about 4 hours, and it paid for itself in the first week in time savings alone.
Frequently Asked Questions
Can I use n8n email automation with providers other than MailerLite?
Absolutely. The workflow structure I described works with any email provider that has a REST API, which includes Mailchimp, ConvertKit, Brevo (formerly Sendinblue), ActiveCampaign, and many others. The only nodes you need to change are the HTTP Request nodes -- swap the API endpoint and payload format to match your provider's documentation. n8n also has built-in nodes for several popular email platforms, which can simplify the setup further.
Do I need the paid version of n8n for email automation?
No. The self-hosted Community Edition of n8n supports everything in this tutorial, including webhooks, scheduled triggers, HTTP requests, and conditional logic. The Cloud version adds convenience features like managed hosting and built-in authentication, but nothing in this workflow requires it. I recommend starting with the community edition if you are comfortable with self-hosting, and moving to Cloud if you want less infrastructure overhead.
How do I handle errors and failed API calls in my email workflows?
n8n has built-in error handling that I strongly recommend using. On every HTTP Request node, enable the "Continue on Fail" option and add an IF node afterward to check the response status code. For critical failures (like MailerLite being down), I route to a Send Email node that notifies me directly, and I log the failed subscriber data to a Google Sheet so I can process them manually or retry later. You can also use n8n's Error Trigger workflow to catch any unhandled failures across all your workflows in one place.
Start Building Your Email Automation Today
If you are still managing email marketing by hand, you are spending hours on work that n8n can handle in seconds. The system I walked through here -- subscriber capture, data enrichment, smart segmentation, welcome sequences, and ongoing nurture -- is the same one running my email list right now.
The best part is that once you build it, it just works. New subscribers flow in, get segmented, receive the right emails at the right time, and get re-engaged or cleaned up automatically. You focus on writing great content and growing your audience instead of shuffling spreadsheets and tagging contacts.
Get started with n8n and build your first email automation workflow today. If you followed my beginner guide, you already have the foundation -- this tutorial is the next step toward a fully automated marketing operation.