MailCull blog: field notes on email deliverability and list quality
FeaturedHow to Test an Email Verification Service Yourself
Build a control set where you already know the answers. Then measure.
How Ecommerce Brands Lose Revenue to Invalid Email Addresses
The typo at checkout does not just cost you a subscriber. It costs you the order confirmation.
Double Opt-In vs Single Opt-In: The Honest Trade-Off
You lose signups. You gain a list where every address is proven. Here is the maths.
Re-Engagement Campaigns: Winning Back Inactive Subscribers Without Wrecking Deliverability
You are about to mail the riskiest segment you own. Do it in this order.
You Inherited a Purchased Email List. Now What?
Verification tells you the addresses work. It cannot tell you that you may mail them.
Email Verification and GDPR: What Is Lawful When You Clean a List
An email address is personal data. Verifying it is processing. Here is what that means.
How to Choose an Email Verification Service
Ignore the accuracy claims. Here is what actually separates these tools.
Stop Bad Email Addresses at the Signup Form
Cleaning is repair. This is prevention, and it costs less.
Email List Decay: How Fast Your List Rots and What to Do About It
Roughly 2% a month, but the range is wide and the drivers are predictable.
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