This article provides a complete, practical walkthrough of the Code Manual Send Webhook 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 Bulk Email Verifications with Icypeas and Google Sheets in n8n
   
   Meta Description:
   Learn how to automate bulk email verifications using Google Sheets and Icypeas with a no-code n8n workflow. Perfect for marketers, data analysts, and lead generation teams.
   
   Keywords:
   n8n, workflow automation, email verification, Icypeas, Google Sheets, no-code tools, bulk email validation, lead generation, API authentication, HTTP request automation
   
   Third-Party APIs Used:
   
   - Icypeas API
   - Google Sheets API
   
   —
   
   Article:
   
   Automate Bulk Email Verifications with Icypeas and Google Sheets in n8n
   
   In the world of digital marketing and lead generation, validating email addresses is crucial to maintaining sender reputation and improving deliverability. But manually verifying thousands of emails can be a daunting task. That’s where workflow automation comes into play. In this article, we’ll walk you through setting up a no-code automation using n8n that connects your Google Sheets to Icypeas, a powerful bulk email verification tool.
   
   Let’s dive into how this workflow works and how you can implement it yourself.
   
   What Does the Workflow Do?
   
   This n8n workflow automates the process of sending email addresses listed in a Google Sheet to Icypeas for bulk verification. It authenticates with the Icypeas API using your credentials and submits the email data as a POST request. Once the verification process is complete, Icypeas emails the results directly to your inbox and makes the detailed report downloadable from its dashboard.
   
   High-Level Workflow Overview:
   
   1. Read a list of emails from Google Sheets.
   2. Authenticate with the Icypeas API using your API Key, API Secret, and User ID.
   3. Generate a secure signature using the Crypto module.
   4. Format and send an HTTP POST request to Icypeas’s bulk email verification endpoint.
   5. Receive the verification results via email and download from the Icypeas dashboard.
   
   Prerequisites
   
   Before you begin, make sure you have the following:
   
   - An Icypeas account (Create one at https://icypeas.com)
   - Your API credentials (API Key, API Secret, and User ID)
   - A Google Sheet with email addresses in the first column (Header: email)
   - An n8n instance (cloud or self-hosted)
   
   Step-by-Step Workflow Breakdown
   
   1. Manual Trigger Node
   
   The workflow starts with a Manual Trigger node labeled “When clicking ‘Execute Workflow.’” This makes it easy to manually initiate the workflow after adding new data to the Google Sheet.
   
   2. Reading Data from Google Sheets
   
   The next step uses a Google Sheets node that reads your email data. You must provide the document ID and sheet name. The Google Sheet should have a column with the header "email".
   
   This node pulls all email addresses and prepares them for processing.
   
   3. Authenticating to Icypeas
   
   The authentication happens through a Code node titled "Authenticates to your Icypeas account". Here, you input your Icypeas credentials:
   
   ```javascript
   const API_KEY = "PUT_API_KEY_HERE";
   const API_SECRET = "PUT_API_SECRET_HERE";
   const USER_ID = "PUT_USER_ID_HERE";
   ```
   
   This node also generates a timestamp and a secure HMAC SHA1 signature (required by Icypeas API) using the built-in crypto library. If you’re using a self-hosted n8n instance, ensure you’ve enabled n8n’s support for the crypto module in General Settings.
   
   4. Sending the POST Request
   
   Once authenticated, the next node “Run bulk search (email-verif)” sends a configured HTTP POST request to the Icypeas bulk-search API endpoint.
   
   The payload of this request includes:
   
   - Task type ("email-verification")
   - Task name
   - User ID
   - Email list
   
   Headers include a timestamp and an Authorization header based on your generated API signature.
   
   Tip: You need to create a new credential in the HTTP Request node for header authentication:
   
   - Name: Authorization
   - Value: Expression {{ $json.api.key + ':' + $json.api.signature }}
   
   5. Receiving Results
   
   After submission, Icypeas will process the request in the background. You will receive an email from no-reply@icypeas.com containing the verification results. Additionally, you can view and download the results from your Icypeas dashboard: https://app.icypeas.com/bo/bulksearch?task=email-verification
   
   Sticky Notes: In-Workflow Documentation
   
   Throughout the workflow, several Sticky Notes guide you through what each node does and highlight areas where you need to configure your credentials. These notes help keep the workflow self-contained and easier to understand for team members or collaborators.
   
   Benefits of This Workflow
   
   - Saves time on manual email validation
   - Ensures better data accuracy and deliverability
   - Reduces bounce rate in your email marketing campaigns
   - Easy to scale and customize as needed
   - No coding knowledge required to get started
   
   Conclusion
   
   By connecting n8n with Google Sheets and Icypeas, you create a seamless, automated pipeline for email verification. This workflow is perfect for marketers, data analysts, and business development teams looking to scale their operations without sacrificing data quality.
   
   Try implementing this workflow in your n8n environment and see how it transforms your email validation process. Automate smarter, not harder.
   
   Happy automating!
   
   —
   
   Need Help?
   
   Visit https://icypeas.com for more details on API documentation and support. For n8n tutorials and community support, head over to https://community.n8n.io.
   
   

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.