Blog
Guides, tips, and insights about email verification and deliverability.
Role-Based Email Addresses: What They Are and Why They Matter for Deliverability
Role-based addresses like info@, admin@, and support@ behave differently than personal inboxes. Here's what they are, the risks of emailing them, and how to handle them.
Email Verification Tools Compared: Pricing, Accuracy & Features (2026)
Honest comparison of 7 email verification services. Real pricing math, accuracy claims, API quality, and which tool fits your use case.
How to Improve Cold Email Deliverability: A Data-Driven Guide
Most cold emails never reach the inbox. Here's what actually affects cold email deliverability and how to fix it — from domain setup to list verification.
Catch-All Email Servers: What They Are and How to Handle Them
Catch-all servers accept every email address — valid or not. Here's how they work, why they complicate verification, and what to do with catch-all results.
Sender Reputation Explained: What It Is and How to Protect It
Your sender reputation decides whether emails reach the inbox or spam. Here's how it works, what damages it, and how to monitor and protect it.
Email Validation vs Email Verification: What's the Difference?
Email validation and email verification are not the same thing. Here's what each one does, when to use which, and why you probably need both.
SPF, DKIM, and DMARC Explained: The Complete Guide to Email Authentication
Email authentication prevents spoofing and improves deliverability. Here's how SPF, DKIM, and DMARC work, why they matter, and how to set them up correctly.
How to Clean Your Email List: A Step-by-Step Guide
A dirty email list tanks your deliverability. Here's a practical, step-by-step process to clean your list, what to remove, and how often to do it.
Disposable Emails: What They Are and Why You Should Block Them
Disposable email addresses wreck your signup funnel and inflate your list with fake users. Here's how they work, why they're a problem, and how to detect them.
Email Bounce Rates: What They Mean and How to Fix Them
High bounce rates destroy your sender reputation. Here's what causes email bounces, how to measure them, and what to do about them — including verification.
How to Verify Email Addresses with an API — Developer Guide
Learn how to integrate email verification into your app using the MailProbe API. Includes curl examples, JSON responses, and integration patterns.