Why Does My Cold Email Have a High Bounce Rate Even Though I Checked It?
Quick answer: B2B contact data goes bad fast, commonly estimated at somewhere between 2% and just under 6% a month depending on the source…
PureListVerifier Blog
Practical guides on email verification and deliverability
Articles on validating email addresses, protecting sender reputation and keeping marketing lists clean.
What Is an Email Verification API, and How Does It Work?
Quick answer: an email verification API is a small, direct request your website or app sends to a verification service the instant someone submits…
Open Rate Dropped Suddenly? Here’s Why (and What to Do)
A sudden open rate drop almost always traces back to one of five things: a deliverability problem, a list quality problem, a tracking or…
Check Email Blacklist Removal: A Step-by-Step Guide
Nobody notifies you when you land on an email blacklist. The first sign is usually a sudden, unexplained drop in delivery, sometimes across your…
Email Marked as Spam: What Happens Next?
One person marking one email as spam rarely does anything dramatic on its own. What actually matters is the rate, how many complaints you…
Shared vs Dedicated IP Email Sending: Which Do You Need?
For most senders under roughly 100,000 emails a month, a shared IP is the better choice, not a compromise. A dedicated IP only pays…
Domain Reputation vs IP Reputation: What’s the Difference?
Mailbox providers track domain reputation and IP reputation as two separate signals, and they don’t always move together. Your domain can be trusted while…
Inbox Placement Test: How to See Where Your Emails Land
“Delivered” only means the receiving server accepted your email. It says nothing about whether that email landed in the primary inbox, a secondary tab,…
How Do You Start Sending From a Brand New Email Domain?
A brand new email domain or IP address has no sending history, and mailbox providers treat that absence of history as a reason for…
Email Deliverability Terms: A Plain-Language Glossary
Email deliverability comes with its own vocabulary, and a lot of it gets thrown around without explanation. This page defines the terms you’ll run…