This article provides a complete, practical walkthrough of the Hunter Noop Send 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 Your Email List Building with n8n, Hunter.io, and SendGrid
   
   Meta Description:  
   Learn how to streamline your email capture and validation process using a free no-code workflow in n8n. Integrate Hunter.io for real-time email validation and SendGrid to grow your mailing list seamlessly.
   
   Keywords:  
   n8n email automation, email validation workflow, Hunter.io API, SendGrid integration, grow email list, automate email capture, no-code marketing tools, email form automation, email marketing automation, email verification
   
   Third-Party APIs Used:
   
   - Hunter.io (for real-time email verification)
   - SendGrid (for managing and growing mailing list subscriptions)
   
   Article:
   
   In today’s fast-paced digital world, building and maintaining a clean and effective email list is crucial for businesses, creators, and marketers alike. But email list management can be time-consuming and prone to user entry errors—causing headaches when invalid or disposable emails flood your CRM. What if you could automate the process entirely? That’s exactly what n8n—the open-source workflow automation tool—lets you do.
   
   In this article, we’ll walk you through a simple yet powerful n8n workflow that seamlessly automates email capture, verification, and list population using Hunter.io and SendGrid. The result? A cleaner, more efficient email marketing funnel.
   
   📨 The Workflow at a Glance
   
   Let’s break down what this n8n workflow does step-by-step:
   
   1. A user submits their email address via a simple web form hosted by n8n.
   2. The submitted email is automatically validated using Hunter.io’s Email Verifier API.
   3. If the email is verified as "valid", the address gets added to a SendGrid email list.
   4. If the email is deemed invalid, the workflow stops without taking any further action.
   
   No manual sorting, no spam signups—just clean, automated list building.
   
   🔧 Components of the Workflow
   
   Here’s a closer look at each node and its role in the workflow:
   
   1. Submit Form (Form Trigger Node)
   This node is the entry point where users provide their email via an n8n-generated webhook. The form titled "Join my mailing list now" promises subscribers practical AI automation tips (nice touch!).
   
   2. Verify Email (Hunter Node)
   Once a subscriber submits their email, the workflow connects to Hunter.io's Email Verifier API to ensure the address is real and valid. This helps maintain a clean and quality-driven list from the get-go.
   
   Hunter.io offers 50 free API credits/month, making it an affordable starting point for small to mid-sized list builders. (Just remember to connect your Hunter.io API key in the node’s credentials.)
   
   3. Check If the Email is Valid (IF Node)
   This conditional logic node checks the API response. If the status is “valid”, the user proceeds in the workflow. Otherwise, the process stops right here—saving your database and email service from spam or mistyped addresses.
   
   4. Add Contact to List (SendGrid Node)
   Valid emails make their way to this node, which adds them to a specific contact list in your connected SendGrid account. SendGrid is a popular choice for transactional and marketing email campaigns—reliable and easy to integrate.
   
   5. Email is Not Valid - Do Nothing (NoOp Node)
   For invalid emails, the workflow hits a NoOp (no operation) node, which ends the process quietly and cleanly.
   
   🛠️ Workflow Features and Benefits
   
   - No-Code Simplicity: You don’t need to write a single line of code. Anyone can build and customize this with drag-and-drop ease in n8n.
   - Spam Protection: Verifying email addresses before subscribing new contacts helps defeat fake or disposable emails.
   - Immediate List Growth: Valid subscribers go straight into your email marketing pipeline with no manual input.
   - Cost Efficiency: Free plans on Hunter.io (50 credits per month) and n8n make this an ideal starting point for solopreneurs and small teams.
   
   📚 Additional Notes & Resources
   
   At the top of the workflow, a sticky note smartly includes links to the full tutorial and case study:
   - Case Study: “Create Email Capture Forms for Free Using n8n, SendGrid, and Hunter.io”  
     https://rumjahn.com/create-email-capture-forms-for-free-using-n8n-and-sendgrid-and-easily-grow-your-subscriber-list/
   - YouTube Video Walkthrough:  
     https://www.youtube.com/watch?v=NgvEHwu19Rs&t=2s
   
   These resources provide step-by-step instructions and live demonstrations for anyone looking to replicate or expand this workflow.
   
   🚀 Ready to Level Up Your Marketing Automation?
   
   Capturing leads is just the first step. With this automated workflow using n8n, Hunter.io, and SendGrid, you can turn email signups into a streamlined, self-cleaning growth engine. Perfect for newsletters, digital product launches, SaaS onboarding, or any scenario where a high-quality subscriber list is critical.
   
   And the best part? It’s completely customizable and extensible. Want to collect additional data? Add more form fields. Want to send a welcome email instantly? Add a SendGrid "Send Email" node immediately after the contact creation.
   
   So go ahead—install n8n, connect your APIs, and put your email list on autopilot.
   
   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.