Verify HighLevel Contact Addresses with Lob

Automates verification of new HighLevel contacts' mailing addresses using Lob to ensure deliverability and data accuracy.

n8n
Verify HighLevel Contact Addresses with Lob

This n8n workflow integrates HighLevel CRM with Lob's address verification service to automatically check the deliverability of mailing addresses for new contacts. Upon creation of a new contact in HighLevel, a webhook triggers the workflow, which extracts the address, verifies it via Lob's API, and updates the contact record in HighLevel with the results.

Benefits include maintaining clean CRM data, reducing undeliverable mail costs, improving marketing campaign ROI, and saving manual verification time. It's particularly valuable for businesses relying on direct mail, such as universities managing alumni outreach or sales teams nurturing leads.

Use cases span education (student/alumni mailing lists), real estate (property owner verification), e-commerce (customer shipping), and any HighLevel user needing reliable physical addresses. Customization options include adding notifications for bad addresses or integrating with other tools like email validation.

Setup is straightforward: connect HighLevel webhook, add Lob API key, and configure n8n nodes. Takes 10-30 minutes with accounts for HighLevel and Lob (free tier available).

$12.99
Last updated October 3, 2026
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How to import this workflow into n8n

  1. 1Purchase or download the workflow to get the n8n workflow JSON file.
  2. 2In your n8n instance, open Workflows and choose "Import from File" (or paste the JSON with Ctrl+V on the canvas).
  3. 3Open each node marked with a credential warning and connect your own accounts and API keys.
  4. 4Run the workflow once manually to verify the data flow, then toggle it to Active.

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