Validate Emails of New HubSpot Contacts with Slack Alerts

This workflow automates email validation for new contacts created in HubSpot. Upon a new contact trigger, it retrieves the contact's email address, validates it using OneSimpleAPI to check deliverability, domain validity, and disposable status, then uses conditional logic to identify suspicious emails. If issues are detected (e.g., poor deliverability, invalid domain, or disposable email), it sends an immediate notification to a specified Slack channel.

Benefits include maintaining high data quality in your CRM, reducing bounce rates in email campaigns, and preventing wasted sales efforts on fake leads. It saves time by automating manual verification, allowing teams to focus on genuine prospects. The workflow is configurable with credentials for HubSpot, OneSimpleAPI, and Slack.

Ideal use cases: Sales teams generating leads via forms or imports, marketing for list hygiene, or any HubSpot user combating spam signups. Enhances lead generation pipelines in CRM-heavy environments, with low setup effort for immediate ROI.