The most cost-effective
email checking service
Improve email inbox deliverability and campaign's ROI with our proven high-quality yet affordable suite of tools.
Trusted by 1,000's of forward-thinking teams in 170+ countries
EMAIL Checker SERVICE
Verify your current email lists with our bulk email checker
Use our online bulk email checker to increase inbox deliverability rate and improve campaign performance in no time.
Easily upload and clean your lists, verify a single email address, and download your segmented results from your dashboard.
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In-forms real-time email checker validation
Block invalid emails before they get into your database
Don't let misspelled and invalid email addresses ruin your list quality and your sender reputation. Quickly add our real-time email checker to your online forms with an easy copy and paste code snippet. It takes only a few seconds and requires no technical skills.
The global leader in independent customer reviews
Based on independent customer reviews, our email checker tool is one of the highest-rated in the industry.
4.8/5
4.9/5
4.7/5
4.8/5
4.9/5
4.7/5
A rock-solid email checker built for top-notch companies
Engineered for reliability
Private by design
Always-available 24/7 support
Full-featured email checker
Databases naturally degrade by about 22.5% every year. A 5% bounce rate can get you blocked. You don't have to worry about that when using our email checker service.
Up to 99%+ Accuracy
Guaranteed accuracy: Up to 99% to improve overall inbox delivery metrics. One of the highest in the email verification industry.
Fast Email Checker
Our email list cleaning service can verify massive, outdated email lists in a relatively short amount of time with complete accuracy.
Affordable Prices
Our innovative email checker promotes superior deliverability (up to 99.9%) to the inbox, converts more sales, and increases your campaigns ROI.
Filetypes Compatibility
Drag and drop your list into our interface or import directly from your ESP. Upload CSV, TXT, XLS or XLSX files and get your database verified within minutes.
Email Bounce Checker
Our email bounce checker identifies which emails will bounce and thus are not safe to send. Keep your bounce rate under control with TheChecker.
Anti-Greylisting Technology
TheChecker has the latest anti-greylisting technology and offers you the most accurate email validation results.
Accept-all Email Checker
Checks for domains that are catch-all, which return valid for all addresses. This feature helps you maintain a high quality database.
Misspelled Domain Detection
Our tool will suggest the possible modification for misspelled email addresses. We won't allow typos to influence your list quality.
Syntax Validation
TheChecker can clean your database from addresses with syntax errors. Therefore you don`t have to do it manually.
Domain Validation
Our email software can successfully mark all of the emails containing inactive or invalid domains that are known for spam and abuse.
MX Record Checker
TheChecker notifies you if an MX Record is found for the domain being checked. This way, you end up with genuine records.
Risk Validation
Our email validation API is your first line of defense against high-risk recipients. We check for role-based addresses.
Role Email Detection
Detects role-based email addresses that are not for personal use and that hurt your inbox deliverability.
Teams Feature
Allow multiple email addresses to login into the same account, share credits and access the same lists.
Customized Exports
Easily export the bulk email verification results in multiple formats, exactly as you need them formatted.
Free Email Deduplication
TheCheckers also comes with a de-duplication feature. It removes all records containing duplicate contacts in your list.
Spam Trap Remover
Spam traps don't apply to real people and having them in your email list will tarnish your sender reputation and also get you blacklisted.
Disposable Email Checker
Our software identifies temporary email accounts that are used to mask real email addresses and checks them against our frequently updated email database.
What our customers say
Don't take our word for it. Here's what our customers think.
"TheChecker has been the saving tool during my prospects! It helps me maintain excellent SMTP deliverability and find decision-maker emails when I have only his first and last name."
J. Figueiras
"I didn't know how many leads I missed due to bad invalid lists and sending reputation problems. TheChecker has made it very quick and easy to dramatically improve the quality of the campaigns and to generate new sales opportunities through email. I strongly recommend it!"
I. Castro
"Here at LeadLovers, we are always looking for smart tools that help us to improve our email deliverability even more. By integrating TheChecker in the lead acquisition flow, we got amazing results in the prevention of sending reputation issues."
F. Milek
"The best! It's easy to use; the results are great. All works perfectly. We reduce all our marketing complaints and fake registers."
J. Perez
Sending emails is not enough.
You have to deliver.
Based on the last 100 million emails we verified in 2019, 23.51% would bounce. We make sure you reach your customers.
Avoid the ESPs blockages
A tiny ~5% bounce rate can get you blocked by the ESPs. Our single and bulk email list cleaning tool gets you protected to improve inbox deliverability and reduce bounce rate.
Protect your sender reputation
1 out of 5 emails is not delivered due to problems related to IP and domains. We run a thorough email list cleaning to remove them and protect your sender reputation.
Increase campaigns ROI
Our innovative email checker promotes superior deliverability (up to 99.9%) to the inbox, converts more sales, and increases your campaigns ROI.