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.
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 Check If Your Domain or IP Is on an Email Blacklist (and Get Removed)
If your emails suddenly stop landing in the inbox, a blacklist is often the reason. Here is how DNS blacklists work, how to check whether your domain or sending IP is listed, and the exact steps to get delisted and stay off.
Amit S. · Jul 24, 2026 
How to Reduce Your Spam Complaint Rate and Stay Under Gmail and Yahoo Limits
Gmail and Yahoo now enforce a hard spam complaint ceiling of 0.3 percent, and crossing it can throttle or block your mail overnight. Here is what the complaint rate really measures, why it climbs, and the practical playbook for keeping it safely below the line.
Nick Abraham · Jul 23, 2026 
Email List Decay: Why Your List Goes Stale and How to Fix It
Every email list rots a little more each month, even the good ones. People change jobs, abandon inboxes, and switch providers, and roughly a quarter of your addresses go bad every year. Here is why list decay happens, how to measure it, and the routine that keeps a list healthy.
Amit S. · Jul 22, 2026 
Validate Salesforce Contacts Before Email Campaigns to Reduce Bounces
Salesforce contact records decay fast, and sending to stale addresses tanks your sender reputation. Here is how to validate your Salesforce list before every campaign.
Kristel K. · Jul 21, 2026 
Why You Need a Separate Domain for Cold Email (and How to Set One Up)
Sending cold outreach from your main company domain puts your entire business at risk. Here is why a dedicated sending domain protects your primary reputation, and a step-by-step guide to setting one up correctly.
Nick Abraham · Jul 20, 2026 
Why Your Emails Land in the Gmail Promotions Tab (and How to Reach the Primary Inbox)
The Promotions tab is not spam, but for cold outreach and one-to-one sales email it may as well be. Here is how Gmail decides which tab your message lands in, and the practical levers that move you back toward Primary.
Nick Abraham · Jul 19, 2026 Stay Updated
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