Automation platforms have completely changed how modern products operate.
Today, teams automate:
- onboarding flows
- notifications
- lead pipelines
- CRM updates
- support workflows
- AI agents
- internal operations
And one of the most powerful workflow automation tools leading this shift is n8n.
But while workflows are becoming easier to automate, communication infrastructure still often becomes fragmented across:
- SMTP providers
- marketing tools
- tracking systems
- webhook services
- automation platforms
That's exactly why we built the official n8n integration for Keplars.
In this guide, we'll walk through how to integrate Keplars with n8n to build scalable, automated communication workflows with much simpler setup.
What is Keplars?
Keplars is an email infrastructure platform focused on making setup and tracking much simpler for modern applications and teams.
Keplars unifies:
- transactional emails
- marketing emails
- automations
- real-time tracking
- OAuth sending
- custom domains
- APIs
- SMTP
- Webhooks
- SDKs across 11 languages
…into a single communication platform built for both tech and non-tech users.
Setup takes just a few clicks.
Why Use Keplars with n8n?
n8n is incredibly powerful for workflow automation.
But communication workflows often still require multiple disconnected services.
Using Keplars with n8n helps centralize:
- email delivery
- tracking
- automations
- notifications
- campaigns
- reporting
inside your automation stack.
Together, n8n + Keplars makes it easier to build:
- AI workflows
- SaaS onboarding
- CRM automations
- lifecycle campaigns
- alerts and notifications
- asynchronous communication systems
without complex infrastructure setup.
What You Can Build:
Using Keplars + n8n, you can automate:
Transactional Workflows:
- welcome emails
- OTP verification
- password reset emails
- system notifications
- invoice emails
Marketing Automations:
- drip campaigns
- follow-up sequences
- newsletters
- re-engagement campaigns
AI + Agent Workflows:
- AI-generated reports
- async agent notifications
- summaries
- scheduled actions
- autonomous workflow updates
Operational Workflows:
- internal alerts
- CRM events
- webhook-triggered notifications
- user lifecycle automation
Integration Features:
The Keplars + n8n integration supports:
- ✅ Email APIs
- ✅ SMTP support
- ✅ Webhooks
- ✅ OAuth-based sending
- ✅ Custom domains
- ✅ Real-time email tracking
- ✅ Automations
- ✅ SDKs across 11 languages
- ✅ Sandbox testing
- ✅ CLI support
Architecture Overview:
Typical workflow:
Step 1: Create a Keplars Account
Start by creating an account on Keplars.
After signup:
1. Create a project
2. Generate an API key
3. Configure your sender domain
4. Enable tracking
Platform: keplars.com
Step 2: Set Up n8n
If you don't already have n8n running:
Start n8n:
By default, n8n runs at http://localhost:5678.
Step 3: Configure the Keplars API Request in n8n
Inside n8n:
1. Create a new workflow
2. Add a Trigger node
3. Add an HTTP Request node
4. Configure the request to Keplars API
Example configuration:
Headers:
Body:
Step 4: Add Real-Time Tracking
Keplars supports:
- sent tracking
- delivery tracking
- open tracking
- click tracking
This makes it easy to automate workflows based on engagement events.
Example:
- send follow-up email if unopened
- notify sales team after click
- trigger onboarding workflows after delivery
Step 5: Configure Webhooks
Keplars webhooks support:
- delivered events
- opened events
- clicked events
- bounce events
- failed delivery events
Example webhook payload:
These webhook events can directly trigger additional n8n workflows.
Example Workflow Ideas:
SaaS User Onboarding:
Trigger:
- user signup
Actions:
- send welcome email
- schedule onboarding sequence
- notify internal CRM
AI Agent Notifications:
Trigger:
- AI task completion
Actions:
- generate report
- send user summary
- notify Slack/Discord
Lead Nurturing:
Trigger:
- new lead captured
Actions:
- send introduction email
- schedule follow-ups
- track engagement
Why This Stack Works Well:
n8n handles automation extremely well.
Keplars handles communication infrastructure extremely well.
Together:
- workflows become easier to scale
- tracking becomes centralized
- setup becomes simpler
- automations become more reliable
without stitching together multiple disconnected services.
Sandbox Testing:
Keplars Sandbox Mode helps developers:
- safely test workflows
- validate templates
- debug automations
- preview tracking events
without emailing real users during development.
Integrations Ecosystem:
Keplars also integrates with:
- Firebase
- Supabase
- PocketBase
- Payload CMS
- Bubble.io
- React Email
- Vercel Marketplace
- n8n
…and more.
Final Thoughts:
Automation is becoming the backbone of modern software.
But automation workflows are only as good as the communication infrastructure behind them.
With the n8n + Keplars integration, developers and teams can build scalable communication workflows with significantly less complexity.
We're excited to see what builders create with this integration.