Latenode
HighLevel
Lob

Automatically verify and tag HighLevel contact addresses using Lob

This Latenode automation verifies the deliverability of mailing addresses for new contacts created in the HighLevel CRM, using the Lob address verification API. It automatically updates the contact records in HighLevel with tags indicating whether the address is deliverable or not deliverable.

This helps HighLevel users maintain accurate mailing addresses in their CRM by catching undeliverable addresses upfront. The automation is triggered by a webhook from HighLevel, extracts the address details, sends them to Lob for verification, and then updates the HighLevel contact record accordingly.

Updated Apr 6, 2026Est. run: 26sEst. cost: $0.0703
How Latenode estimates time and cost

Latenode bills workflow runs in credits: 1 credit = 30 seconds of processing. Minimum charge per run depends on your plan. Plug-and-Play (PnP) AI nodes are billed separately—each PnP token is $1 USD, charged pay-as-you-go at vendor cost plus a small processing fee, with no API keys required.

Full pricing — how credits work →
Documents & invoicing

Workflow preview

What this template does

  • Extracts mailing address details for new contacts created in HighLevel CRM
  • Verifies the deliverability of the addresses using the Lob address verification API
  • Updates the HighLevel contact records with tags indicating deliverable or non-deliverable
  • Helps HighLevel users maintain accurate mailing addresses in their CRM
  • Provides an automated way to catch undeliverable addresses upfront

How it works

1
Trigger

Webhook Trigger

This automation is triggered by a webhook from HighLevel when a new contact is created or an existing contact's address is updated. The webhook payload contains the new or updated contact's address details.

2
Action

Extract Address from HighLevel Contact

The automation extracts the address, city, state, and zip code from the HighLevel webhook payload.

3
Action

Verify Address with Lob

The extracted address details are then sent to the Lob address verification API to check the deliverability of the address.

4
Logic

Check Deliverability Status

The automation checks the response from the Lob API to determine whether the address is deliverable or not deliverable.

5
Action

Update HighLevel - Deliverable

If the address is found to be deliverable, the automation updates the HighLevel contact record with a tag indicating that the address is valid.

6
Action

Update HighLevel - NOT Deliverable

If the address is found to be undeliverable, the automation updates the HighLevel contact record with a tag indicating that the address is not valid.

Setup guide

1

Add HighLevel Credential

Add your HighLevel API credential in the Latenode Credentials panel. This will allow the automation to securely access your HighLevel CRM data.

2

Add Lob Credential

Add your Lob API credential in the Latenode Credentials panel. This will allow the automation to securely use the Lob address verification service.

3

Configure Webhook Trigger

Add a Webhook node in the Latenode visual builder and configure it to listen for the HighLevel webhook that indicates the creation of a new contact or an update to an existing contact's address information.

4

Map HighLevel Contact Fields

In the HighLevel node settings, map the address, city, state, and zip code fields from the HighLevel webhook payload to the corresponding input fields.

5

Configure Lob Address Verification

In the Lob node settings, specify the address, city, state, and zip code fields to send to the Lob address verification API. Also, configure the node to handle the deliverability status response from Lob.

Requirements

HighLevel CRM account with access to create and update contact records
Lob API key to access the address verification API
Webhook integration between HighLevel and Latenode to trigger the automation when new contacts are created
Latenode workspace with the necessary nodes and access to the HighLevel and Lob integrations

FAQ

Common questions about this template

This automation uses the contact information, including mailing address, from new contacts created in the HighLevel CRM. It sends the address details to the Lob API for verification.
Contact support →

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