Verify HubSpot contacts with NeverBounce and send risky-email alerts to Slack

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1. Workflow Overview

How it works Use this workflow to regularly re check contacts from HubSpot and notify your team in Slack when risky records are found. This ensures your CRM stays clean and your sender reputation r...

Best for

CRM automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.scheduletrigger, n8n-nodes-base.splitinbatches, n8n-nodes-neverbounce-email-verification.nbemailverification, n8n-nodes-base.slack, n8n-nodes-base.hubspot, n8n-nodes-base.set, n8n-nodes-base.switch

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Verify HubSpot contacts with NeverBounce and send risky-email alerts to Slack
Workflow name: Verify HubSpot contacts with NeverBounce and send risky-email alerts to Slack

How it works Use this workflow to regularly re-check contacts from HubSpot and notify your team in Slack when risky records are found. This ensures your CRM stays clean and your sender reputation remains protected.

Workflow Logic Scheduled Trigger → Get Many Contacts (HubSpot) → Loop Over Items → Verify with NeverBounce → Filter Risky → Update HubSpot → Final Slack Report.

Setup Instructions

Set Schedule: Open the 'Run Daily' node to set your preferred check interval (e.g., daily or weekly).
Connect HubSpot: In the 'Get many contacts' node, connect your credentials and select the specific list or search criteria for the contacts you want to audit.
NeverBounce Credentials: In 'Neverbounce: Verify Email', select your NeverBounce API key.
Configure Flagging: In the 'Hubspot: flag risky contact' node, ensure the 'Lead Status' mapping aligns with your internal HubSpot properties (currently set to mark invalid/risky as 'Disqualified').
Final Report: Connect your Slack credentials in the 'Slack final audit report' node and choose the channel for the summary report.

Video Tutorial Watch the 50-second setup guide here: https://youtu.be/NZU8s1cnIJI

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 - Sticky Note

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

Block 2 - Run Daily

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.2

Block 3 - Loop Through Contacts

Type / Role: n8n-nodes-base.splitInBatches - splitInBatches
Config choices: Version 3

Block 4 - NeverBounce: Verify Email

Type / Role: n8n-nodes-neverbounce-email-verification.nbEmailVerification - nbEmailVerification
Config choices: Version 1

Block 5 - Slack final audit report

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.1

Block 6 - Hubspot: flag risky contact

Type / Role: n8n-nodes-base.hubspot - hubspot
Config choices: Version 2.2

Block 7 - Get many contacts

Type / Role: n8n-nodes-base.hubspot - hubspot
Config choices: Version 2.2

Block 8 - Email Parser

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

Block 9 - Status Parser

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

Block 10 - Check if risky

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

3. Summary Table

Workflow	Verify HubSpot contacts with NeverBounce and send risky-email alerts to Slack
Complexity	intermediate
Nodes	10
Categories	CRM
Author	Sharon
Published	27 Apr 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/15341/15341.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

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

Download workflow JSON Original n8n.io source CRM workflows

Frequently asked questions

What does Verify HubSpot contacts with NeverBounce and send risky-email alerts to Slack do?

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 CRM use case.

Sharon

1 workflow

Nodes

n8n-nodes-base.stickynote n8n-nodes-base.scheduletrigger n8n-nodes-base.splitinbatches n8n-nodes-neverbounce-email-verification.nbemailverification n8n-nodes-base.slack n8n-nodes-base.hubspot n8n-nodes-base.set n8n-nodes-base.switch

Complexity

intermediate

Published 27 Apr 2026

Likes 0

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Install path: /data/workflows/15341/15341.json

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Verify HubSpot contacts with NeverBounce and send risky-email alerts to Slack

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Sticky Note

Block 2 - Run Daily

Block 3 - Loop Through Contacts

Block 4 - NeverBounce: Verify Email

Block 5 - Slack final audit report

Block 6 - Hubspot: flag risky contact

Block 7 - Get many contacts

Block 8 - Email Parser

Block 9 - Status Parser

Block 10 - Check if risky

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions