What Is a Catch-All Email Address?
A catch-all domain accepts mail for every address, so an ordinary SMTP check cannot confirm a single mailbox. Here is what that means for your list and how VeriMailX resolves it.
Read explainerCatch-All Email Detection: What It Means for Your List
What a catch-all (accept-all) domain is, why most verifiers give up on it, and how to handle the addresses they flag as risky or unknown.
Read explainerWhat Are Role-Based Email Addresses?
info@, support@ and sales@ belong to teams, not people. Learn when role addresses hurt deliverability and when they are perfectly fine to keep.
Read explainerWhat Are Spam Traps and How Do You Avoid Them?
Pristine, recycled and typo spam traps quietly destroy sender reputation. Learn how they get onto lists and how verification and hygiene keep them out.
Read explainerHard Bounce vs Soft Bounce: What's the Difference?
Hard bounces are permanent failures you must suppress immediately. Soft bounces are temporary. Here is how to read bounce codes and act on them.
Read explainerWhat Is a Good Email Bounce Rate?
How to calculate bounce rate, what counts as healthy by industry, and the fastest ways to bring a high bounce rate back under control.
Read explainerHow Email Verification Works
How verifiers check whether a mailbox exists without sending a message, what each verdict means, and why some results come back unknown.
Read explainerWhat Are MX Records and Why Do They Matter for Email Verification?
MX records tell the internet where a domain's email should be delivered. Missing or misconfigured MX records guarantee a bounce.
Read explainerWhat Is Sender Reputation and How Do You Protect It?
Mailbox providers score every sending domain and IP. Learn the inputs to that score and the habits that keep you in the inbox.
Read explainerWhat Is Greylisting in Email?
Greylisting temporarily rejects unfamiliar senders to filter spam. It also makes email verification return 'unknown' — here is how to handle it.
Read explainerEmail List Hygiene: A Practical Maintenance Guide
A repeatable schedule for cleaning, segmenting and sunsetting contacts so your list stays deliverable as it grows.
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