Free Email List Validation

Bulk Email Validation For Free



Validation Results

Email Status Health Score Reason

Email marketing is one of the fastest, most cost-effective ways to reach your customers. But only if your list isn’t full of dead ends. Our free email validator is designed to give you clarity before you hit send. Paste up to 200 email addresses or upload a .csv or .txt file, and this tool will clean, score, and analyze your list in seconds.


It checks for formatting issues, valid MX records, disposable domains, catch-all traps, and even scores the overall health of each address. You’ll get a breakdown of what’s good, what’s risky, and what’s completely invalid. No sign-up, no paywall, and no fluff. Just solid insights to help you avoid bounce rates and wasted effort.


Why Should You Clean Your Email List Before a Campaign?


Sending a blast to a messy email list is like shooting arrows in the dark. You’ll hit some targets, sure, but you’ll also get a ton of bounces, spam flags, and blacklisted domains. That’s a fast way to kill your sender reputation. Email cleaning helps you eliminate typos, fake sign-ups, dead accounts, and shady throwaway addresses before they drag down your metrics. By validating your list ahead of time, you're giving your message the best chance to land in real inboxes, where real decisions happen. Whether you're doing cold outreach, nurturing leads, or launching a product update, a clean list means higher open rates, better deliverability, and a stronger brand.


What is a catch-all domain?


A catch-all domain is like a black hole for email. It’s configured to accept messages sent to any address under that domain, whether it exists or not. That might sound useful at first, but it’s a major red flag in email validation. Let’s say you send to `ajhdsfks@weirdcompany.com`, and it doesn’t bounce. That doesn’t mean the user exists. It just means the domain is set to accept everything. These types of domains make it impossible to confirm whether an email address is real, and they often end up skewing your data. Our validator flags suspected catch-all domains so you can decide whether to keep or exclude them from your campaign.


Does this tool send a test email to each address listed?


No, and that’s a good thing. Sending test emails just to see if an address exists is a quick way to get yourself flagged as spammy. Most professional-grade validators (ours included) rely on a combination of syntactical checks, DNS lookups, MX verification, and behavioral patterns. We don’t ping inboxes or simulate messages. Instead, we analyze the structure, domain setup, and historical context to score each email without risking your sender reputation.


How many emails can I validate at a time?


You can validate up to 200 email addresses per batch. You can paste them manually into the box (one per line) or upload a .csv or .txt file. Once you hit "Validate," you’ll get a table showing each address, its status, a health score, and a reason for the result. The 200-email limit helps us keep the tool fast, free, and protected from abuse. It’s ideal for one-off campaigns, list spot-checks, or weekly hygiene routines.


What if I need to validate more than 200 emails at once?


Need to run through thousands of emails in bulk? We’ve got you covered. Just not through the free frontend. If you’re managing a large list and want validation at scale, reach out to me directly on Twitter or LinkedIn. I can walk you through a larger solution that ties into your CRM or lead system without slowing you down.


And I won't take it personally if you're not using our CRM. Our email validation tools and data cleaning app are CRM agnostic. So whether your pockets are deep enough to use Salesforce or you're killing it with a Google Sheets based CRM, we'll help you get that email list cleaned up and your outreach sharp.


How much do bad email addresses cost businesses on average?


It’s easy to underestimate the cost of dirty data. According to Experian, bad email addresses can reduce marketing ROI by up to 25 percent. And that's just direct loss. When you factor in spam traps, blacklists, bounced messages, and the damage to your domain reputation, it gets worse. For every 1,000 bad emails you send, you could lose:

  • Hours of wasted labor
  • Hundreds of dollars in sending costs
  • Thousands in lost customer trust

Cleaning your list isn’t just smart. It’s survival.


What is an MX Record and why is it important?


An MX (Mail Exchange) record tells the internet where to deliver emails for a domain. If a domain doesn’t have a valid MX record, it can’t receive email. Simple as that. So when you validate an email and we see that the domain has no MX setup, or a broken one, we flag it as invalid. There’s no point sending to a domain that doesn’t know how to accept mail. You’d just be shouting into the void. MX checks are one of the most reliable signals we use in the validation process. They help you avoid bounces from expired, decommissioned, or typo-filled domains.



Do valid emails still bounce?


Yes, and it happens more often than people think. Just because an email is valid doesn't mean it's guaranteed to land. There are plenty of reasons your message might bounce, even if the address itself checks out. The inbox could be full. The company might be in the middle of a server migration or forgot to renew their domain. Maybe their email provider is experiencing downtime. Sometimes, your own domain might be flagged or your email formatting triggers a soft block on the recipient’s side. A bounce doesn’t always mean a bad email. But too many bounces can still hurt your sender reputation, which is why running a pre-check through a validator is worth doing every time.


More free tools for your small business are only a click away


This email validator is just the beginning. If you manage contacts inside a CRM (like SuiteCRM, Dynamics, or Super Easy CRM), you know the chaos that comes from duplicate records, old phone numbers, and half-completed profiles. Check out JetPurge, our free CRM data cleaner. It lets you upload a messy contact list, clean it, dedupe it, and export it back into your CRM. No plugins or setup required. It’s already helped dozens of teams clean up their pipelines and boost deal velocity. No subscriptions. Just cleaner data, faster execution, and better results.


Matt Irving is the CEO of Super Easy Tech, LLC.
 
Matt is the CEO of Super Easy Tech and creator of Super Easy CRM. He is a passionate software engineer, tech blogger, and gamer. Feel free to connect on any of the platforms listed below.

Posted by: Matt Irving on 5/23/2025