This article provides a complete, practical walkthrough of the Manual Stickynote 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:  
   Automating Email Verification with Icypeas and n8n: A Step-by-Step Guide
   
   Meta Description:  
   Learn how to automate email verification using Icypeas and n8n in this step-by-step tutorial. Perfect for developers and marketers looking to validate email addresses seamlessly through an HTTP request.
   
   Keywords:  
   n8n workflow, email verification, Icypeas, API authentication, HTTP request automation, Node.js code execution, email validation, automated workflows, Icypeas API, n8n automation
   
   Third-Party APIs Used:
   
   - Icypeas Email Verification API
   
   Article:
   
   Automating Email Verification with Icypeas and n8n: A Step-by-Step Guide
   
   Email list validation is essential to improving deliverability, protecting sender reputation, and ensuring accurate analytics. Whether you're managing a mailing list or onboarding new users, verifying email addresses can often be repetitive and time-consuming. This is where automation tools like n8n come to the rescue.
   
   In this article, we'll explore a simple yet powerful n8n workflow designed to verify a single email address using the Icypeas Email Verification API. Ideal for developers, digital marketers, and SaaS operators, this workflow allows you to streamline the process with ease by integrating API calls and authentication seamlessly.
   
   Overview of the Workflow
   
   This n8n workflow, titled “Email verification with Icypeas (single),” consists of three main operational steps and a few sticky notes for guidance:
   
   1. A manual trigger to initiate the workflow.
   2. A code node responsible for authenticating the user’s Icypeas account.
   3. An HTTP request node that sends the email verification request to the Icypeas API.
   
   Let’s break it down.
   
   Step 1: Manual Trigger
   
   The process starts with a "Manual Trigger" node labeled: When clicking "Execute Workflow". This node allows the user to run the workflow instantly with a button click inside the n8n editor. It’s ideal for testing setups or verifying individual addresses without involving external triggers or schedules.
   
   Step 2: Authenticating with Icypeas
   
   The second step is the backbone of the workflow – an authentication node written in JavaScript using the "Code" node in n8n.
   
   This node dynamically constructs a valid authentication header for the Icypeas API using the user’s API key, API secret, and user ID. These credentials can be found in your Icypeas profile under https://app.icypeas.com/bo/profile.
   
   Here’s a summarized breakdown of what the code does:
   
   - Constructs the full request URL pointing to Icypeas’s /api/email-verification endpoint.
   - Creates a timestamp for the current request.
   - Generates a SHA1-based HMAC signature using the combination of timestamp, HTTP method, and path, all hashed with your API secret.
   - Returns a structured JSON object containing all the authentication credentials and API metadata.
   
   Before using this step, it’s crucial to manually input your API_KEY, API_SECRET, and USER_ID in the placeholders within the code snippet. The workflow is also compatible with self-hosted n8n instances, thanks to a feature toggle that enables the crypto module to perform HMAC generation.
   
   Step 3: Sending the Email Verification Request
   
   Once authenticated, the data is passed to an HTTP Request node. This node sends a POST request to Icypeas’s API, verifying the provided email address: “uyqsdqkudhfiqudhfiqduhfiqdhfqif@gmail.com”.
   
   Here’s how the HTTP Request is configured:
   
   - URL: Built dynamically from the authentication step and sent as {{ $json.api.url }}.
   - Method: POST
   - Auth Headers: Constructed using your credentials via a "Generic Credential Type" using HTTP Header Auth.
   - Body Parameters: Contains the email address to be verified in JSON format.
   
   Additionally, a timestamp (`X-ROCK-TIMESTAMP`) is passed along as a custom header, ensuring each call is nonce-protected and secure.
   
   Pro Tip: Once you've confirmed the request works, you can substitute the static email with dynamic inputs, such as data from a webhook or form submission, to scale your verification process.
   
   Credential Configuration
   
   For the Header Authorization to work, you must create and configure a new HTTP Header Auth credential within n8n:
   
   - Navigate to the credentials section in the HTTP node.
   - Create a new credential named something like “Icypeas Auth”.
   - Set key as an expression: {{ $json.api.key + ':' + $json.api.signature }}
   - Save and link it back to the HTTP Request node.
   
   Visibility of Results
   
   Once the request is successful, the result of the verification can be viewed by logging into your Icypeas dashboard:  
   https://app.icypeas.com/bo/singlesearch?task=email-verification
   
   This helps you easily track invalid, disposable, or non-existent email addresses in real time.
   
   Conclusion
   
   With just a few nodes and API credentials, you can automate a traditionally tedious task like email verification using n8n and Icypeas. This integration is lightweight, efficient, and perfect for scaling verification processes in broader marketing or onboarding workflows.
   
   Whether you're validating leads, cleaning your mailing list, or ensuring data integrity for user signups, this n8n workflow sets you on the right path toward automated email hygiene with minimal coding required.
   
   Getting Started
   
   Sign up for an Icypeas account at icypeas.com, grab your API credentials, and import this workflow into your n8n instance to start verifying emails right away. If you’re self-hosted, remember to activate the crypto module for full compatibility.
   
   By automating email verification with n8n and Icypeas, you ensure your communication remains effective, your user base remains clean, and your platform remains professional.
   
   Happy automating!

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.