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Bulk email validation and AI scoring with ZeroBounce

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Bulk email validation and AI scoring with ZeroBounce preview
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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

ZeroBounce Bulk Email Validation and Scoring This template uses the ZeroBounce node to validate and score email addresses. It is designed to first check if an email is...

Best for

  • Lead Generation automation workflows
  • AI Summarization automation workflows
  • advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.manualtrigger, n8n-nodes-base.stickynote, n8n-nodes-base.noop, n8n-nodes-base.switch, n8n-nodes-base.set, @zerobounce/n8n-nodes-zerobounce.zerobounce, n8n-nodes-base.wait, n8n-nodes-base.merge

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by ZeroBounce.

Original n8n.io source

1.1 Workflow description

Title
Bulk email validation and AI scoring with ZeroBounce
Workflow name
Bulk email validation and AI scoring with ZeroBounce

ZeroBounce Bulk Email Validation and Scoring

This template uses the ZeroBounce node to validate and score email addresses. It is designed to first check if an email is deliverable and then uses A.I. Scoring to assess the sender's deliverability confidence.

This is an example template to demonstrate ways to use the ZeroBounce node and how to manipulate the data with core n8n nodes.

A ZeroBounce API key is needed to use this template. Generate one here.

1. Email Validation

The Validate email node sends the email address to the ZeroBounce API to determine its status (e.g., 'valid', 'invalid', 'spam trap').

  • Function: Checks the email address against ZeroBounce's Email Validation API

2. A.I. Scoring

For emails confirmed as valid, the workflow proceeds to the Score email node.

  • Function: Applies ZeroBounce's proprietary A.I. model to assess the quality of the email, returning a numerical score (0 to 10).

3. Output

The workflow concludes with the Filter by score Switch Node, which uses the ZeroBounce score to categorize the email into three confidence tiers:

  • High Score: Indicates high confidence in deliverability and is ready for immediate campaigns.
  • Medium Score: Suggests moderate risk; these might be suitable for re-engagement or specialized campaigns.
  • Low Score: Indicates high risk, even if the status was technically valid. These should be suppressed to protect sender reputation.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - When clicking ‘Execute workflow’

Type / Role
n8n-nodes-base.manualTrigger - manualTrigger
Config choices
Version 1

Block 2 - Sticky Note

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 3 - Low score

Type / Role
n8n-nodes-base.noOp - noOp
Config choices
Version 1

Block 4 - Not valid

Type / Role
n8n-nodes-base.noOp - noOp
Config choices
Version 1

Block 5 - Is valid?

Type / Role
n8n-nodes-base.switch - switch
Config choices
Version 3.3

Block 6 - Sticky Note3

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 7 - Sandbox emails

Type / Role
n8n-nodes-base.set - set
Config choices
Version 3.4

Block 8 - Sticky Note5

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 9 - Sticky Note6

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 10 - Sticky Note7

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 11 - Filter by score

Type / Role
n8n-nodes-base.switch - switch
Config choices
Version 3.3

Block 12 - Medium score

Type / Role
n8n-nodes-base.noOp - noOp
Config choices
Version 1

Block 13 - High score

Type / Role
n8n-nodes-base.noOp - noOp
Config choices
Version 1

Block 14 - Sticky Note9

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 15 - Send file for validation

Type / Role
@zerobounce/n8n-nodes-zerobounce.zeroBounce - zeroBounce
Config choices
Version 1

Block 16 - Wait for validation file to be processed

Type / Role
n8n-nodes-base.wait - wait
Config choices
Version 1.1

Block 17 - Get validation results file

Type / Role
@zerobounce/n8n-nodes-zerobounce.zeroBounce - zeroBounce
Config choices
Version 1

Block 18 - Get validation file status

Type / Role
@zerobounce/n8n-nodes-zerobounce.zeroBounce - zeroBounce
Config choices
Version 1

Block 19 - Send file for scoring

Type / Role
@zerobounce/n8n-nodes-zerobounce.zeroBounce - zeroBounce
Config choices
Version 1

Block 20 - Get scoring file status

Type / Role
@zerobounce/n8n-nodes-zerobounce.zeroBounce - zeroBounce
Config choices
Version 1

Block 21 - Get scoring results file

Type / Role
@zerobounce/n8n-nodes-zerobounce.zeroBounce - zeroBounce
Config choices
Version 1

Block 22 - Wait for scoring file to process

Type / Role
n8n-nodes-base.wait - wait
Config choices
Version 1.1

Block 23 - Merge validation and scoring results

Type / Role
n8n-nodes-base.merge - merge
Config choices
Version 3.2

Block 24 - Scoring file status

Type / Role
n8n-nodes-base.switch - switch
Config choices
Version 3.3

Showing the first 24 of 28 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow Bulk email validation and AI scoring with ZeroBounce
Complexity advanced
Nodes 28
Categories Lead Generation, AI Summarization
Author ZeroBounce
Published 05 Dec 2025

4. Reproducing the Workflow from Scratch

  1. 1. Download the workflow JSON

    Use the JSON export at /data/workflows/11538/11538.json as the source template for this automation.

  2. 2. Import the template into n8n

    Open n8n, import the downloaded JSON, and review each node before activating the workflow.

  3. 3. Configure credentials and variables

    Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.

  4. 4. Test with sample data

    Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.

  5. 5. Activate and monitor

    Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Frequently asked questions

What does Bulk email validation and AI scoring with ZeroBounce do?

ZeroBounce Bulk Email Validation and Scoring This template uses the ZeroBounce node to validate and score email addresses. It is designed to first check if an email is...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Lead Generation, AI Summarization use case.