This article provides a complete, practical walkthrough of the Mattermost Lemlist Automate Triggered n8n agent. It connects HTTP Request, Webhook across approximately 1 node(s). Expect a Intermediate setup in 15-45 minutes. One‑time purchase: €29.

What This Agent Does

This agent orchestrates a reliable automation between HTTP Request, Webhook, handling triggers, data enrichment, and delivery with guardrails for errors and rate limits.

It streamlines multi‑step processes that would otherwise require manual exports, spreadsheet cleanup, and repeated API requests. By centralizing logic in n8n, it reduces context switching, lowers error rates, and ensures consistent results across teams.

Typical outcomes include faster lead handoffs, automated notifications, accurate data synchronization, and better visibility via execution logs and optional Slack/Email alerts.

How It Works

The workflow uses standard n8n building blocks like Webhook or Schedule triggers, HTTP Request for API calls, and control nodes (IF, Merge, Set) to validate inputs, branch on conditions, and format outputs. Retries and timeouts improve resilience, while credentials keep secrets safe.

Third‑Party Integrations

• HTTP Request
• Webhook

Import and Use in n8n

1. Open n8n and create a new workflow or collection.
2. Choose Import from File or Paste JSON.
3. Paste the JSON below, then click Import.
4. Show n8n JSON

   Title:  
   Automate Sales Follow-Ups: Instantly Notify Your Team in Mattermost When You Get a Lemlist Reply
   
   Meta Description:  
   Learn how to automate your sales outreach by using an n8n workflow that instantly alerts your team on Mattermost whenever someone replies to your Lemlist email campaign.
   
   Keywords:  
   n8n workflow, Lemlist automation, Mattermost alerts, email reply notification, sales automation, Lemlist integration, Mattermost integration, automated follow-ups, outreach automation, n8n tutorial
   
   —
   
   Article:
   
   In today’s fast-paced sales environment, timing is everything. Whether it's responding to prospects or keeping your team updated, the faster you move, the better your outcomes. Fortunately, automation tools like n8n make it easy to streamline workflows so you can focus on what really matters — closing deals.
   
   In this article, we’ll explore a simple yet powerful n8n workflow that connects Lemlist, a dynamic outreach platform, to Mattermost, a secure team messaging app. The goal? Instantly notify your team when a prospect replies to a Lemlist email campaign.
   
   Let’s dive into how this integration works and why it can give your sales efforts a meaningful edge.
   
   The Challenge: Delays in Notifying Teams of Lead Interactions  
   When running cold outreach campaigns through Lemlist or similar platforms, it’s easy for valuable email replies to get buried in inboxes. Often, sales reps waste time manually checking for responses or miss them altogether. This not only delays follow-up but also affects conversion rates.
   
   The Solution: n8n-Powered Automation  
   n8n, an open-source workflow automation tool, allows you to connect different apps and services with visual workflows. In this case, it acts as the glue between Lemlist and Mattermost. With just two nodes, this workflow creates an instant pipeline of communication between the two platforms.
   
   Here’s how it works, step-by-step:
   
   1. Lemlist Trigger Node – "emailsReplied" Event  
   The first node in the workflow is a Lemlist Trigger, configured to fire whenever someone responds to an email in a specific Lemlist campaign (identified by the campaign ID: cam_H5pYEryq6mRKBiy5v). This webhook-based mechanism means instant updates — no polling or delays.
   
   When a reply is received, this node provides details such as:
   - The responder’s first name
   - The name of the campaign
   - The actual reply text
   
   2. Mattermost Notification Node  
   Once a reply is detected, the workflow instantly sends a formatted message to a specified Mattermost channel (channel ID: qx9yo1i9z3bg5qcy5a1oxnh69c). The message includes:
   - The prospect's first name
   - The campaign name
   - The full reply text
   
   The message is sent in a conversational Markdown format for easy readability:
   > John has replied back to your "Product Launch Campaign." Below is the reply:  
   > “Thanks for reaching out. Let’s set up a meeting next week.”
   
   This immediate alert empowers team members to follow up while the lead is still warm, significantly increasing conversion opportunities.
   
   Why This Automation Matters  
   There are several benefits to implementing this workflow:
   
   - Real-Time Team Alerts: Immediate notifications help sales teams act quickly on replies.
   - No Missed Opportunities: Automated alerts reduce the risk of missing hot leads.
   - Better Team Productivity: Sales reps no longer have to manually monitor reply threads.
   - Customizable at Scale: Easily modify the workflow for other channels or more complex sequences.
   
   How to Set This Up in n8n  
   Getting started is straightforward — you’ll need access to both the Lemlist and Mattermost APIs, as well as an active n8n instance.
   
   1. Set up Lemlist API credentials in n8n.
   2. Configure the "Lemlist Trigger" node with the event “emailsReplied” and the desired campaign ID.
   3. Create a "Mattermost" node and connect it to the trigger.
   4. Use the provided message template to notify your team.
   5. Save and activate your workflow.
   
   Optional Enhancements  
   Want to take this even further? Here are a few ideas:
   - Include timestamps or additional metadata like email addresses.
   - Trigger a Slack or Microsoft Teams alert in parallel.
   - Log replies into a CRM like HubSpot or Salesforce using additional n8n nodes.
   
   Third-Party APIs Used:
   
   1. Lemlist API – To monitor reply events on outreach campaigns.
   2. Mattermost API – To send structured messages to a Mattermost channel.
   
   Final Thoughts  
   Automation is no longer a luxury — it's a necessity. By leveraging n8n to connect Lemlist with Mattermost, you ensure that your team never misses a critical touchpoint. Fast follow-ups mean higher engagement, better customer relationships, and ultimately, more deals closed.
   
   Set up once, and watch your response times shrink and your success rates soar. Happy automating!
   
   —
   
   If you find this integration helpful, consider exploring more advanced n8n workflows to further streamline your sales pipeline. With n8n, the possibilities are practically limitless.

5. Set credentials for each API node (keys, OAuth) in Credentials.
6. Run a test via Execute Workflow. Inspect Run Data, then adjust parameters.
7. Enable the workflow to run on schedule, webhook, or triggers as configured.

Tips: keep secrets in credentials, add retries and timeouts on HTTP nodes, implement error notifications, and paginate large API fetches.

Validation: use IF/Code nodes to sanitize inputs and guard against empty payloads.

Why Automate This with AI Agents

AI‑assisted automations offload repetitive, error‑prone tasks to a predictable workflow. Instead of manual copy‑paste and ad‑hoc scripts, your team gets a governed pipeline with versioned state, auditability, and observable runs.

n8n’s node graph makes data flow transparent while AI‑powered enrichment (classification, extraction, summarization) boosts throughput and consistency. Teams reclaim time, reduce operational costs, and standardize best practices without sacrificing flexibility.

Compared to one‑off integrations, an AI agent is easier to extend: swap APIs, add filters, or bolt on notifications without rewriting everything. You get reliability, control, and a faster path from idea to production.

Best Practices

• Credentials: restrict scopes and rotate tokens regularly.
• Resilience: configure retries, timeouts, and backoff for API nodes.
• Data Quality: validate inputs; normalize fields early to reduce downstream branching.
• Performance: batch records and paginate for large datasets.
• Observability: add failure alerts (Email/Slack) and persistent logs for auditing.
• Security: avoid sensitive data in logs; use environment variables and n8n credentials.

FAQs

Can I swap integrations later? Yes. Replace or add nodes and re‑map fields without rebuilding the whole flow.

How do I monitor failures? Use Execution logs and add notifications on the Error Trigger path.

Does it scale? Use queues, batching, and sub‑workflows to split responsibilities and control load.

Is my data safe? Keep secrets in Credentials, restrict token scopes, and review access logs.