Learn About Email Validation
Guides, tutorials, and best practices to help you get the most out of your email validation workflow.
The Ultimate Guide to Catch-All Emails
Everything you need to know about catch-all domains: what they are, why standard tools fail to validate them, and how Scrubby's proprietary technology delivers the answers other tools can't. Includes real-world case studies and actionable strategies.
Guides, Tutorials & More
Dive deep into email validation best practices with our curated collection of resources.
How to Validate Risky Emails
Learn the step-by-step process for validating catch-all and risky emails that standard tools mark as unknown.
Understanding Catch-All Domains
What catch-all domains are, why they matter for your email campaigns, and how to handle them effectively.
Email Deliverability Best Practices
Proven strategies to improve your email deliverability rates and protect your sender reputation across all major ISPs.
Integrating Scrubby with Your Stack
Step-by-step tutorials for connecting Scrubby with Clay, HubSpot, Instantly, SmartLead, Zapier, and more.
How to Verify Catch-All Emails
What to actually do with the addresses ZeroBounce and similar tools hand back as "unknown", and how to resolve them.
Scrubby API Documentation
Complete API reference with authentication, endpoints, webhooks, and code examples in multiple languages.
Email Verification vs Validation
Understand the critical difference between email verification and validation, and why you need both for optimal results.
Latest from the Blog
Stay updated with the latest insights on email validation, deliverability, and lead generation.
How to Clean Your MailerLite Email List and Reduce Bounce Rates Before Your Next Campaign
MailerLite prices your account on subscriber count and quietly pauses senders whose bounce rate climbs too high, so a dirty list costs you money and deliverability at the same time. Here is the exact workflow to clean your MailerLite list and protect your sender reputation before your next campaign goes out.
Kristel K. · Aug 30, 2026 
How to Clean Your ActiveCampaign Email List and Reduce Bounce Rates Before Your Next Automation
ActiveCampaign charges you for every contact and punishes you for every bounce, so a dirty list quietly drains your budget and your deliverability at the same time. Here is the exact workflow to clean your ActiveCampaign list and protect your sender reputation before your next automation fires.
Kristel K. · Aug 19, 2026 
How to Validate Pipedrive Contact Emails Before Sales Outreach and Cut Bounce Rates
Pipedrive fills up with mistyped, stale, and catch-all email addresses that silently wreck your outreach. Here is how to validate contacts on the way in and clean the ones already in your pipeline, so reps stop wasting sequences on dead inboxes.
Nick Abraham · Aug 19, 2026 
How to Verify Office 365 and Outlook Catch-All Emails Without Getting Blocked
Microsoft 365 domains hide most of their mailboxes behind catch-all and greylisting, so ordinary verifiers return unknown and you lose real buyers. Here is why Outlook and Office 365 are so hard to verify, and how to resolve those addresses cleanly.
Amit S. · Aug 17, 2026 
How to Clean a Beehiiv or Substack Newsletter List and Keep Your Growth Numbers Real
Creator newsletters on Beehiiv and Substack live and die by two numbers: subscriber count and open rate. Both get quietly wrecked by unvalidated signups. Here is how bad addresses sneak onto your list and how to validate them before they drag down your deliverability.
Kristel K. · Aug 16, 2026 
Reoon Email Verifier Alternative: Why Scrubby Wins on Catch-All and Risky Email Verification
Reoon Email Verifier is a fast, budget-friendly bulk checker, but it still guesses on catch-all and risky addresses. Here is where Reoon holds up, where it leaves leads on the table, and how Scrubby verifies the exact addresses most tools skip.
Amit S. · Aug 16, 2026 Stay Updated
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