This article provides a complete, practical walkthrough of the Mattermost Googlesheets Automate Scheduled 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:  
   Automating Event Follow-Ups with n8n: Sending Post-Session Feedback Requests via Mattermost
   
   Meta Description:  
   Learn how to automate post-event feedback reminders using n8n’s no-code workflow automation tool. This guide demonstrates how to connect Google Sheets data with Mattermost messages triggered on a custom schedule.
   
   Keywords:  
   n8n automation, no-code automation, Google Sheets integration, Mattermost automation, workflow automation, post-event feedback, custom cron jobs, event follow-up messages, Mattermost bot messages, Google Sheets API
   
   Third-Party APIs Used:
   
   - Google Sheets API (via OAuth2)
   - Mattermost API
   
   Article:
   
   In an era where timely communication and feedback loops play a vital role in improving services and events, automation can serve as a powerful enabler. With n8n, a source-available workflow automation tool, it's simpler than ever to stitch together services like Google Sheets and Mattermost to eliminate manual tasks.
   
   This article walks you through a practical n8n workflow that sends automated feedback request messages to a Mattermost channel after a scheduled event. Whether you're coordinating internal sessions, training, or webinars, this workflow ensures no opportunity for attendee feedback is missed.
   
   The Scenario
   
   You’ve hosted an event or meeting, and you want to ensure that participants provide their feedback promptly. Usually, someone would have to remember to draft a message, find the right links, and then manually post it to a team channel on Mattermost. This process is error-prone, repetitive, and inefficient — exactly the kind of task that n8n is made to automate.
   
   Let’s dive into how this workflow uses three key nodes — a Cron trigger, Google Sheets, and Mattermost — to automate the feedback collection process.
   
   Component Breakdown
   
   1. Cron Node: Scheduled Trigger  
   The workflow begins with a Cron node set to run at a very specific time: 5:00 PM on September 28th annually. The cron expression “0 0 17 28 9 *” decodes to this exact timestamp.
   
   This allows the automation to be strictly tied to your event schedule. Whether you're planning a quarterly seminar or a once-a-year town hall, this kind of precision removes the need for manual reminders.
   
   2. Google Sheets Node: Fetching Event Data  
   Once triggered, the workflow moves on to pull data from a designated Google Sheet. The sheet, identified by its ID, includes important session details stored in the “Sessions” tab within columns A to D.
   
   Assuming the structure of the sheet includes relevant session information such as:
   
   - Session title
   - Feedback form link
   - Mattermost Channel ID
   - Other metadata
   
   The Google Sheets node fetches this data dynamically, meaning the system can be reused for various sessions with updated info, as long as the sheet contents are kept consistent.
   
   This integration uses OAuth2 authentication, ensuring secure access to corporate or G Suite spreadsheets.
   
   3. Mattermost Node: Sending Targeted Messages  
   Once the event data is pulled from the spreadsheet, the final node — the Mattermost node — takes over.
   
   It crafts a friendly and informative message to the appropriate Mattermost channel (based on the Channel ID pulled from the spreadsheet). The message follows this template:
   
   "Hey @channel, we hope you had a great time at [Session Name]. Let us know how we did by sharing your feedback with us on the link below!"
   
   Additionally, the message includes an embedded attachment with a clickable link directing users to the corresponding feedback form.
   
   Thanks to its dynamic message block and attachment generation using n8n’s expression language (e.g., {{$node["Google Sheets"].json["Session"]}}), the message content updates automatically based on which session’s data is pulled — truly plug-and-play personalization.
   
   Key Benefits of This Workflow
   
   - Zero manual effort: Once scheduled, the process requires no further human interaction.
   - Timely delivery: Delivers messages when attendees are most likely to still be engaged.
   - Scalability: The same workflow can be reused for multiple sessions/events just by updating the Google Sheet.
   - Cross-platform synergy: Integrates a spreadsheet (used for planning) with a team communication tool (used for engagement).
   
   Use Cases Beyond Feedback
   
   While this workflow is optimized for feedback collection post-session, it's flexible enough to serve a variety of notification tasks, such as:
   
   - Sending calendar reminders
   - Sharing links to session recordings or post-event materials
   - Notifying team leads of missed KPIs
   - Announcing open roles or internal opportunities
   
   Conclusion
   
   This simple yet powerful three-node n8n workflow showcases the true strength of no-code automation. By integrating a data source like Google Sheets with a communication tool like Mattermost through scheduled triggers, users can streamline their post-event communication and continuously improve experiences via timely feedback.
   
   For any organization that runs recurring sessions or events, this automation can drastically reduce overhead while improving participant engagement and data collection efforts.
   
   If you haven’t explored n8n yet, now is the perfect time to dive into the world of automated workflows. Your future self — freed from repetitive tasks — will thank you.
   
   —
   
   Interested in more n8n use cases? Check out the official n8n documentation and community forums to explore a world of automation possibilities.

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.