Trestle - Identity Data Enrichment and Validation APIs Trestle - Identity Data Enrichment and Validation APIs Trestle - Identity Data Enrichment and Validation APIs Trestle - Identity Data Enrichment and Validation APIs
  • Products
        • Enrichment

        • Reverse Phone APIGLOBAL
        • Verify and enrich phone numbers
        • Reverse Address API
        • Verify and enrich address information
        • Caller Identification API
        • Identify and enrich caller information
        • Add-Ons

        • Litigator Check
        • Identify phone numbers associated with serial litigators
        • Email Deliverability
        • Confirm email inboxes accept mail in real-time
        • Spam Check
        • Flag phone numbers tied to high-risk calling activity
        • Email Age Score
        • Score how long an email has existed
        • Validation & Verification

        • Phone Validation APIGLOBAL
        • Validate phone numbers and identify disconnected numbers
        • Real Contact API
        • Verify phone, email, and address information
        • Address Validation API
        • Validate and normalize addresses
        • Assess Risk

        • Decision Console
        • Optimize identity verification for manual review
        • Decision Signals API
        • Automate identity verification for risk decisioning
        • Start using Trestle products today

          Get started for free—no credit card required

          Start Your Free Trial

  • Solutions
        • Industries

        • B2B Contact Data
        • eCommerce
        • Insurance
        • Lead Generation
        • Real Estate
        • Communications
        • Use Cases

        • Verify and Prioritize Leads
        • Outbound Dialing Optimization
        • Assess Risk And Prevent Fraud
        • Inbound Call Routing and Verification​
        • Signup and Onboarding​
        • Optimize AI Voice Agents
        • Start using Trestle products today

          Get started for free—no credit card required

          Start Your Free Trial

  • Pricing
  • Resources
        • API Documentation
        • Blog
        • Knowledge Base
        • Case Studies
        • Glossary
        • Partners and Integrations
  • Company
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        • Why Trestle
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  • Log In
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Trestle Overview

19
  • Does Trestle Offer DNC Checks?
  • Does Trestle Have a Sandbox Environment To Test Integrations?
  • What is Trestle’s Coverage and Accuracy?
  • Which Countries’ Data Do You Have?
  • Does Trestle Normalize Phone Number Format?
  • How Do You Integrate Trestle’s APIs?
  • How Does Trestle’s API Pricing Work?
  • How Often is Trestle’s Data Updated?
  • How to Properly Sample a Test File and Evaluate Trestle
  • Understanding NPA-NXX and the Implications of Number Portability
  • Understanding Trestle’s Free API Trial and the API Access Request Process for Specific Products
  • What are the Response Times for Trestle’s APIs?
  • What are the Various Sources of Trestle’s Identity Data?
  • What are Trestle’s SLAs?
  • What Demographic Data Does Trestle Have?
  • What Is Our Global Phone Validation Coverage?
  • What is the Default and Max QPS Supported?
  • What Queries are Billable?
  • What Security Measures are Taken by Trestle?

Product Features

38
  • Everything to Know About IP Trust Scores
  • How to Check When an Email Address Was Made
  • Everything to Know About Spam Checks
  • Using IP Intelligence Checks to Verify Lead Legitimacy in Real Contact API
  • Everything to Know About Phone-to-Address Match
  • Real Contact API 1.1 vs. Real Contact API 2.0: What’s Changed and How to Upgrade
  • Everything to Know About Phone Activity Score
  • Everything to Know About Real Contact API 2.0
  • How Trestle’s Activity Score is Different From HLR Lookups
  • Everything To Know About Name Match Details
  • Everything To Know About Phone-to-Name Confidence Score
  • Everything To Know About Litigator Checks
  • Everything To Know About the Email Age Score Add-on
  • Everything To Know About the Email Deliverability Add-on
  • Explain Real Contact API Grading
  • Fine-Tuning Find Person API Results
  • How Can Trestle’s Email Data Be Used?
  • How Do I Determine Phone Validity?
  • How Do You Read Trestle’s Phone Activity Score?
  • How Does Our Real Contact API Name Matching Work?
  • How Does Trestle Assess Email Validity in Real Contact?
  • How is Trestle’s Phone Activity Score Calculated?
  • How To Read the Real Contact Data Assessment Report
  • International Reverse Phone API Explained
  • Line Type Fidelity and Confidence
  • Trestle API Response Attribute Ranking
  • Trestle Warnings – A Comprehensive Guide
  • Understanding the Difference: Phone Validity vs. Trestle’s Activity Score
  • What are the Different Address Types Returned by Trestle?
  • What Does a Name Match of Null Mean?
  • What Does the Carrier Name Mean?
  • What is the Difference Between CNAM and Trestle’s Smart CNAM API?
  • What is the Difference Between Fixed VoIP and Non-fixed VoIP?
  • What is the Difference Between Reverse Phone API, Caller Identification API, and Smart CNAM API?
  • What is the Link Date Associated with Phones and Addresses?
  • Why and When to Use Trestle’s Name Hint
  • Why Do We Return a Maximum of 100 Entities in Find Person API?
  • Why Does the Address Return as Invalid?

Integrations

22
  • HubSpot | Phone Validation App Integration Guide
  • ZoomInfo | Phone Validation, Real Contact, and Reverse Phone Integration Guide
  • Databar | Phone Validation Integration Guide
  • Make | Real Contact API Integration Guide
  • Make | Phone Validation API Integration Guide
  • Apollo | Phone Validation Integration Guide
  • HighLevel | Phone Validation Integration Guide
  • boberdoo | Real Contact API Integration Guide
  • Clay | Validate Phone Number Integration Guide
  • Clay | Verify Contact Integration Guide
  • HubSpot | Real Contact Phone Grading App Integration Guide
  • How Do I Use a HubSpot List To Grade My Contacts?
  • How Do I Use HubSpot Workflow Triggers To Grade My Contacts?
  • Lead Prosper | Phone Validation Integration Guide
  • Lead Prosper | Real Contact Integration Guide
  • Reverse Phone API Enrichment of Leads in Google Sheets via Zapier
  • Snowflake | Phone Validation Integration Guide
  • What is the Phone Validation Integration within ActiveProspect?
  • What is the Real Contact Integration within ActiveProspect?
  • Validate and Verify Leads with Trestle’s Phone Validation API in Sierra Interactive via Zapier
  • Validate Leads with Trestle’s Phone Validation API in LeadConnector via Zapier
  • Zapier | Grade Leads from a Google Sheet with Real Contact

Troubleshooting

9
  • How to Prevent 429 Errors by Sizing API Concurrency to Your QPS Limit
  • How to Fix 403 Forbidden Errors When Using Trestle’s APIs
  • Why Won’t My Email Work to Signup for Trestle?
  • Ruby Integrations: 403 Forbidden Errors
  • Getting 429: Too Many Requests Error – Why?
  • How to Remove or Deactivate a User in Trestle’s Developer Portal
  • How to Update Phone to Name/Address Linkage Records
  • Reviewing Usage Data
  • Why is the Name Associated with the Phone Incorrect?

Developer Portal

8
  • Business Verification Failed? Here’s What Documents You Need to Submit
  • How to Find and Download Your Receipt or Invoice
  • How to Monitor API Errors With Your Usage Graph
  • Batch Upload FAQ
  • Developer Portal Wallet Frequently Asked Questions
  • Export and Analyze Your Queries in Your Developer Portal Account
  • Getting Started with Trestle’s Developer Portal Wallet
  • Making Changes to Billing Settings for the Developer Portal Wallet

User Guides

9
  • Phone Validation in Java
  • Batch Upload Instructions
  • How Do I add Additional Members to My Trestle Account?
  • How to Handle Special Characters in API Queries
  • Phone Validation API with ASP.NET
  • Phone Validation with JavaScript and HTML: Leveraging Trestle’s API
  • Phone Validation API with PHP: Leveraging Trestle’s API
  • Phone Validation API with Python
  • Phone Validation API with React

Telephony Knowledge

9
  • Choosing the Right Number Lookup API
  • How to Identify Callers In Real-Time Using a Reverse Phone API
  • Why is Line Type Intelligence Important?
  • What is a “No Routes Found” Phone Message?
  • The Best Phone Validation API for Call Centers
  • How to Identify Disconnected Phone Numbers Automatically
  • What is a Phone Number Reputation Lookup?
  • What is a Carrier Number?
  • What is a Non-Fixed VoIP Phone?

Risk Suite Overview

8
  • How to Read Email Breach Reports and IP Abuse Reports in Decision Console
  • Everything to Know About Decision Signals API
  • How to Get Started With Decision Console
  • What is the Decision Overview and How Do I Read It?
  • What is an Attribute Card and How Do I Read It?
  • What is Link Builder and How Do I Use It?
  • Understanding Team and Account Management
  • FAQ and Troubleshooting: Decision Console
  • Home
  • Knowledge Base
  • Integrations
  • Zapier | Grade Leads from a Google Sheet with Real Contact
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Zapier | Grade Leads from a Google Sheet with Real Contact

4 min read

One of the biggest challenges businesses face is separating high-quality leads from junk leads (i.e., fake names, bad phone numbers, and throwaway emails). That’s where the Real Contact API comes in.

By automatically verifying lead details the moment a form is submitted and logged in a Google sheet, Real Contact API helps your team instantly flag spam and prioritize real, high-converting prospects, saving hours of manual review and wasted outreach.

Real Contact will provide:

  • A-F Contact Grades
  • Phone Activity Score
  • Line type Data
  • Phone and email name matching
  • Optional: Flag phone numbers associated with known TCPA litigation.
  • Optional: Check if the email address is deliverable.
  • Optional: Check for an email age score.

By using Zapier, Real Contact can be triggered through thousands of platforms and deliver the results back to your spreadsheet, CRM, or lead management system of choice.

Here is a step-by-step guide on how to grade leads using Real Contact from a Google Sheet, though, with Zapier, many different form/CRM platforms are available.

Before you begin, make sure you have the following: #

  1. An active Zapier account. (Click here to sign up.)
  2. Access to Trestle’s Real Contact API. (You can sign up for a Trestle account on Zapier, or you can sign up directly on our Developer Portal.)
  3. Google Form (or alternative form provider) that captures first and last name, phone number, and email address. These responses should be stored in a Google Sheet.

Set Up Your Zap #

Step 1: Log into Zapier.

Step 2: Select Create > Zaps

Trigger #

Select “Trigger.”

Setup #

App: Google Sheets (or app of choice)

Trigger Event: New or Updated Spreadsheet Row

Account: Google Account that owns the form

Configure #

Spreadsheet: Select the spreadsheet where form responses are stored.

Worksheet: Select the worksheet within the spreadsheet where form responses are stored.

Trigger column: Leave blank if you want new rows to trigger the zap. Select a column in the spreadsheet if a new response in a specific column should trigger the zap.

Test #

Select “Test” and verify rows of data from the spreadsheet are getting populated in Zapier.

Add Trestle #

Once the Google Sheet has been configured, select “Add Step” and search for Trestle.

Setup #

App: Trestle

Action Event: Select “Real Contact.”

Account: Select “Account” and “Connect a new account.” This will take you to a page where you will input your Trestle API key.

Your API key can be copied from the Trestle Developer Portal.

Configure #

On the “Configure” step, you will be selecting which columns of your spreadsheet should be mapped to the Real Contact query. 


Full name and phone number are required, and email address is optional. These fields should be mapped to your spreadsheet.

Add-ons provide additional data points and can include:

  • email_checks_deliverability
  • email_checks_age
  • litigator_checks

These can be added by selecting them from the drop down menu. Don’t worry, though. You can pick and choose which ones you need, and they only need to be added once.

Test #

Once the app is configured, you can move to the testing phase. Click “test,” and you should see Real Contact data pulled into Zapier.

Final Steps #

Once the Real Contact data is pulled into Zapier, the rest is up to you. Here are a few ideas:

Flow Controls #

Adding a step with flow controls can let you segment leads based off of the Real Contact data. Use a filter to let the zap proceed only if certain conditions are met or build different paths with rules to separate leads based on their quality.

For example, your rule could look like this:

  • If Phone Contact Grade = A, B, or C, THEN continue down “Path 1.”
  • If Phone Contact Grade = D or F, THEN continue down “Path 2.”

OR

  • If Phone Contact Grade = A, B, or C, THEN add “Add record to CRM.”

Supplemental Resources #

Real Contact

  • Explain Real Contact Grading
  • How does Real Contact Name Matching Work?
  • How do you read Phone Activity Score?

Add-Ons

  • Everything to know about Litigator Checks
  • Everything to know about Email Age Score
  • Everything to know about Email Deliverability Add-on

Documentation

  • API Documentation for Real Contact

Support #

Should you have any issues with the app or questions about installation, please contact support@trestleiq.com or schedule a call with us to review.

Updated on January 6, 2026
Validate Leads with Trestle’s Phone Validation API in LeadConnector via ZapierHubSpot | Phone Validation App Integration Guide
Table of Contents
  • Before you begin, make sure you have the following:
  • Set Up Your Zap
  • Trigger
  • Setup
  • Configure
  • Test
  • Add Trestle
  • Setup
  • Configure
  • Test
  • Final Steps
    • Flow Controls
  • Supplemental Resources
  • Support
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Verified Identities. Trusted Interactions.

U.S. coverage for enrichment and verification.

Global coverage for phone validation and reverse phone.

Based in Bellevue, WA

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Company

  • About Us
  • Why Trestle
  • Careers
  • Affiliate Program
  • Contact

Products

  • Reverse Phone API
  • Reverse Address API
  • Caller Identification API
  • Phone Validation API
  • Real Contact API
  • Address Validation API
  • Batch Upload
  • Litigator Check Add-on
  • Free Lead Assessment

Use Cases

  • Outbound Dialing Optimization
  • Inbound Call Routing and Verification
  • Signup and Onboarding
  • Lead Verification
  • Optimize AI Voice Agents

Resources

  • Blog
  • Knowledge Base
  • Case Studies
  • Glossary
  • Data Dictionary
  • Changelog
  • Partners and Integrations

Developers

  • Developer Portal
  • API Documentation
  • API Live Status

Legal

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  • Privacy Policy
  • Data Processing Agreement
  • Service Level Agreement
  • Do Not Sell My Personal Information
Trestle - Identity Data Enrichment and Validation APIs
  • Products
        • Enrichment

        • Reverse Phone APIGLOBAL
        • Verify and enrich phone numbers
        • Reverse Address API
        • Verify and enrich address information
        • Caller Identification API
        • Identify and enrich caller information
        • Add-Ons

        • Litigator Check
        • Identify phone numbers associated with serial litigators
        • Email Deliverability
        • Confirm email inboxes accept mail in real-time
        • Spam Check
        • Flag phone numbers tied to high-risk calling activity
        • Email Age Score
        • Score how long an email has existed
        • Validation & Verification

        • Phone Validation APIGLOBAL
        • Validate phone numbers and identify disconnected numbers
        • Real Contact API
        • Verify phone, email, and address information
        • Address Validation API
        • Validate and normalize addresses
        • Assess Risk

        • Decision Console
        • Optimize identity verification for manual review
        • Decision Signals API
        • Automate identity verification for risk decisioning
        • Start using Trestle products today

          Get started for free—no credit card required

          Start Your Free Trial

  • Solutions
        • Industries

        • B2B Contact Data
        • eCommerce
        • Insurance
        • Lead Generation
        • Real Estate
        • Communications
        • Use Cases

        • Verify and Prioritize Leads
        • Outbound Dialing Optimization
        • Assess Risk And Prevent Fraud
        • Inbound Call Routing and Verification​
        • Signup and Onboarding​
        • Optimize AI Voice Agents
        • Start using Trestle products today

          Get started for free—no credit card required

          Start Your Free Trial

  • Pricing
  • Resources
        • API Documentation
        • Blog
        • Knowledge Base
        • Case Studies
        • Glossary
        • Partners and Integrations
  • Company
        • About Us
        • Why Trestle
        • Careers
        • Affiliate Program
        • Contact
  • Log In
  • Start for Free