Corbett
Corbett Email Address Validator checks bulk email lists and sorts every address into Deliverable, Undeliverable, Syntax Error, Accept-All, Disposable or Unknown. Load a list file or paste addresses, choose the categories to keep and export a clean list. Try free demo on 100 addresses first.
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Your list stays on your PC. Corbett never receives a copy of the addresses.
Free demo, scanned clean on VirusTotal and a 30 day money back window.
Lifetime licence from $99 Demo checks 100 addresses
List facts
Dead mailboxes, typos and throwaway domains fill lists bought, scraped or left idle for two years. Bounces pile up on your next send, inbox providers lower your sender score and good subscribers stop seeing your mail. Email Address Validator checks the list first and keeps only addresses worth sending to.
What gets checked
7List sources
7Result categories
8No guarantee for
4How Email Address Validator Handles Accept-All Results
Some mail servers answer yes to every address on the domain, real or not. No validator can confirm one mailbox behind a catch all server, so Email Address Validator marks those results Accept-All. Send to them in a small test batch before a full campaign.
Related pages: Email Address Extractor, Duplicate Cleaner Tool and Email Tracking Software.
Core features
Five screens of Corbett Email Address Validator, in working order.
Load list
Select File loads a list from disk with one address per row in a single column. Tick File contains header when row one holds a label like Email, and Email Address Validator skips it.
Full version sets no cap on list size, so a file with thousands of rows loads like a short one.
Manual entry
Mail Ids takes a list name and addresses pasted line by line. That suits a handful of contacts from a business card scan or a forwarded thread.
Gmail, Yahoo and company domains mix in one batch, and no file is needed.
Validation
Validate and Export starts the check, and every address lands in a group. Deliverable holds mailboxes that accept mail, Undeliverable holds addresses that would bounce and Syntax Error lists broken formats.
Disposable and Accept-All flag throwaway and catch all domains. Email Address Validator shows a message when the check ends.
Export settings
Settings decide what your export holds. Keep Deliverable alone for a cold campaign, or add Accept-All for a warm list that already opens your newsletter.
Disposable Domains takes your custom domains, and the Browse button sets where your files land.
Results
Preview the results on screen, then select Open Folder to find the output on your PC. Your report counts every category, and the chosen addresses sit in your saving path ready for your mailing tool.
Want to see who mails whom across a mailbox? Use Email Tracking Software. Many lists with duplicate rows? Try Duplicate Cleaner first.
Working process
Four steps take you from raw list to clean file. Try them on 100 addresses in free demo first.
Open the software
Install the setup file with Run as Administrator and start Email Address Validator on Windows.
Add your list
Select File to load a list with one address per row, or paste addresses into Mail Ids. Tick File contains header if row one is a label.
Set the categories
Open Settings, choose a saving path and tick the categories to export. Add custom domains to the Disposable Domains list if you need them.
Validate and export
Press Validate and Export. Preview the results, then select Open Folder to load your clean file into your mailing tool.
Every setting appears with screenshots in the Email Address Validator guide.
Working process
Prefer text? Open the Email Address Validator guide for every setting with screenshots.
Advanced options
Small options in Email Address Validator save hours when you clean lists in bulk.
Select File
Load a list with one address per row
File contains header
Skip a label in row one
Mail Ids box
Paste addresses line by line
Six categories
Deliverable to Unknown
Categories to export
Keep only the groups you choose
Disposable Domains list
Flag throwaway inboxes
Custom domains
Add your own disposable domains
Saving path
Choose where files land
Syntax errors apart
Broken formats in their own group
Unknown kept apart
Open results stay separate
Category report
Totals for every category
No list cap
Any list size once licensed
List sources
Email Address Validator checks lists from files and from pasted text. Match your source to where your addresses sit today.
CSV exports
One column of addresses
TXT lists
One address per row
CRM downloads
Customer lists from your CRM
Signup forms
Addresses from your forms
Event signups
Sheets from events
Old newsletters
Lists left idle for years
Pasted addresses
Mail Ids box
Company domains
Gmail, Yahoo and company addresses
Free demo
Test Email Address Validator on a Real List
Install free demo of Email Address Validator, load a list file or paste addresses and choose your categories. Free demo checks 100 addresses, so your report is quick to compare with past bounce data.
Download free demoTry before you buy
Free demo of Email Address Validator unlocks every setting and category. Only the number of addresses checked is capped.
| Feature | Free demo | Full version |
|---|---|---|
| Select File and Mail Ids | Yes | Yes |
| All settings and categories | Unlocked | Unlocked |
| Addresses checked | Up to 100 | No cap on list size |
| Price | Free | From $99 one time |
Use cases
Anyone who sends mail to a long list and wants fewer bounces needs an email address validator.
Email marketers
Clean your list before every campaign to cut bounces.
Newsletter owners
Clear dead mailboxes from a list left idle for two years.
Sales teams
Check CRM downloads before outreach starts.
Event organisers
Catch typos in event signup sheets.
Small businesses
Check company and Gmail addresses with no credits to buy.
List managers
Validate a bought or inherited list before it joins your database.
Why Corbett
No subscription
Lifetime licence from $99
Works on your PC
Corbett never receives your list
Accept-All flag
Catch all servers get a category
Custom domains
Extend the Disposable Domains list
Export by category
Keep the groups you choose
Saved report
Totals for every category
No list cap
Any size once licensed
30 day refund
Money back window after purchase
Before you validate
Email Address Validator sorts addresses into categories. Here is what that covers and where it stops.
| Capability | Supported | What it means |
|---|---|---|
| Address format | Yes | Broken formats land in Syntax Error |
| Mailbox status | Yes | Mailboxes that accept mail land in Deliverable and likely bounces in Undeliverable |
| Catch all servers | Flagged | Domains that accept any address land in Accept-All |
| Disposable domains | Yes | Throwaway inboxes get flagged, and you add custom domains |
| Spam trap addresses | No guarantee | A valid result does not promise a spam trap stays out of your list |
| Reader interest | No | A valid address is not permission to send or proof of interest |
| Mac and Linux | No | Email Address Validator installs on Windows only |
Before purchase
Free checker websites test a single address in seconds. Full lists raise upload, privacy and credit questions, so compare the two.
| Job | Checker websites | Email Address Validator |
|---|---|---|
| Cost | Free for a few checks | $99 one time |
| One doubtful address | Quick answer | Answers too |
| Lists of thousands | Paid credits per address | No cap after purchase |
| Where the list goes | Uploaded to their server | Stays on your PC |
| Report | On screen | Saved to disk |
Green rows mark where a checker website is enough. For one doubtful contact, a checker website answers fast.
Global recognition
Users rate Corbett email address validator 4.9 out of 5 from 493 reviews.
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Specifications
Download details
System
Supported editions
Windows 11, 10, 8 and 7 in 32 bit or 64 bit, plus Windows Server 2008 to 2019.
No macOS or Linux build.
Corbett has built Windows email utilities since 2020. Validator questions reach its own developers.
User testimonials
Email Address Validator earns 493 reviews from marketers and admins.
Collected across 493 reviews via download portals and support email. Three reviews below are unedited.
For the past six months, I have been using this email ID validator and it give amazing results. With the help of this software, our bounce rate significantly decreases. It quickly checks bulk email addresses with great accuracy. Highly recommended for professionals for their email marketing!
The interface of the software is simple and interactive. That's why, I easily check 1000 email addresses without any issues. With this tool, I can now easily work on email campaigns and help in improving my performance. Fantastic service!
I have trouble finding valid email IDs. I was trying to find a solution that can check my emails easily and precisely. Searching through the internet, I come across with Corbett email address validator. This tool changed my life and helped me in my work.
Before validating
Tidy input gives a faster and clearer report. Three checks first.
Keep one column
Move names and phone numbers out of the address column. Extra text in a cell counts as a syntax error.
Tick File contains header
If row one says Email or Address, tick the header option and Email Address Validator skips that label.
Validate opted in lists only
A valid address is not permission to send. Check the list against signup records too, since spam laws and inbox providers judge consent, not syntax.
Building a list from existing mail is covered in Extract email addresses from Thunderbird and Extract email addresses from MBOX file.
Best practice
Good lists start with careful checks. Four habits keep Email Address Validator results tidy.
Copy your list file
Keep a spare copy before you start, so your original rows stay untouched.
Start with 100 addresses
Check a small batch in free demo and compare the report with past bounce data.
Test Accept-All results
Send to Accept-All addresses in a small batch before a full campaign.
Export the right categories
Keep Deliverable alone for a cold list. Add Accept-All for a warm list.
Common questions
Lists, categories, bounces and what free demo checks.
Click Select File and load your list, or paste addresses into Mail Ids. Open Settings, choose the categories to export, then press Validate and Export.
An email address validator checks which addresses on a list can receive mail. Corbett Email Address Validator does that for bulk lists on Windows and sorts every address into a category.
Yes. Addresses that fail the mailbox check land in Undeliverable, the ones most likely to bounce.
The domain accepts mail for any address, so one mailbox cannot be confirmed. Treat those results as a test group.
Yes, in a small test batch before a full campaign. No validator can confirm one mailbox behind a catch all server.
A disposable address is a temporary inbox from a throwaway service. Most senders drop these signups.
Yes. Settings lets you add custom domains to the Disposable Domains list.
Syntax Error lists addresses with a broken format. Extra text in a cell counts as a syntax error too.
Email Address Validator needs your addresses in one column. Tick File contains header if row one is a label.
No. Paste one address per line into Mail Ids with a list name and validate without building a file.
Yes. Email Address Validator gives free mail providers and company domains the same checks.
Any number once licensed. Free demo of Email Address Validator stops at 100 addresses.
Up to 100 addresses with every setting and category unlocked.
In the saving path you set under Settings, split by the categories you chose. Select Open Folder to find the output.
No. Spam trap addresses, full inboxes and future closures stay outside any check, so a valid address can still bounce later.
Yes. Domain and mailbox checks talk to mail servers, so your PC needs a working connection during validation.
No. Email Address Validator sends nothing, so nobody on your list receives a message during the check.
No. Your list stays on your computer, and Email Address Validator never uploads it.
No. Email Address Validator needs Windows 7 to 11 or Windows Server 2008 to 2019, so install the email validator on a Windows PC.
Email Address Validator needs 131.1 MB of free disk space, 2 GB of RAM and a Core 2 Duo processor at 2.4 GHz. Start the setup with Run as Administrator.
The setup file is 47.9 MB.
From $99, with higher tiers for teams. Payment is one time.
Yes. A refund request made within 30 days of purchase is accepted. See the refund policy for details.
List guides
Every guide below helps you collect or clean contact data before validation.
Contact exports
Same family: Email Address Extractor. Account moves use Email Migration Tool or IMAP Migration Tool. More formats sit on the email converter tool page, broken archives belong with email recovery software and email viewer software opens saved mail free.
Get started
Check 100 addresses free, compare the report with past bounces and buy when it fits. Your $99 licence carries a 30 day refund window.
Download free demo Purchase now
47.9 MB · Windows 11 to 7 and Windows Server 2019 to 2008 · 30 day money back