MailCull blog: field notes on email deliverability and list quality
FeaturedWhat to Actually Do With Risky and Unknown Verification Results
Two of the four statuses decide themselves. These are the two that need you.
CRM Data Hygiene: Keeping Contacts Clean in HubSpot, Salesforce and Pipedrive
A dead address in the CRM costs selling time, not just a bounce.
Email Verification for Agencies Managing Client Lists
You inherit the list and you inherit the blame. Audit before you send.
Nine Email Data Myths That Cost People Money
Nine things people believe about email data that quietly cost them money.
How 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.
One practical deliverability note in your inbox each week.
Short, plain-English breakdowns of one real situation per send. Unsubscribe anytime. No tracking pixels.