Validate & Score Leads with ZeroBounce AI Before Sending Gmail Emails

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Built by ZeroBounce ZeroBounce
Created on June 11, 2026

Description

ZeroBounce Email Validation, A.I Scoring & Sending with Gmail



This workflow automates the process of validating, scoring, and emailing leads from a Google Sheet. It ensures you only send emails to high-quality contacts, protecting your sender reputation.

🚀 How it Works
Trigger: Watches a Google Sheet for new or updated rows (contacts).
Validate: Uses ZeroBounce to check if the email address is valid.
If Invalid: Updates the sheet with the reason and marks "Emailed" as false.
Score: If valid, uses ZeroBounce A.I. Scoring to grade the lead quality (0-10).
If Low/Medium Score (<9): Updates the sheet with the score and marks "Emailed" as false.
Send: If the score is High (9-10), sends an email via Gmail.
Update: Writes the final status back to the Google Sheet, preventing duplicate sends.

📋 Setup Requirements
Google Sheet:** A sheet with columns for Email, Validated, Scored, Score, Emailed, Reason, etc.
ZeroBounce Account:** API Key for validation and scoring.
Gmail Account:** Connected via OAuth2 to send emails.

💡 Key Features
Cost Efficient:** Checks existing Validated and Scored columns to avoid re-processing contacts.
Risk Protection:** Filters out valid but low-quality leads (e.g., catch-alls or low scores).
Status Tracking:** Keeps your Google Sheet updated with rich data (Sub-status, Domain Age, etc.).

Nodes Used (2)

Gmail
n8n-nodes-base.gmail
Google Sheets
n8n-nodes-base.googleSheets