KleanMail 1


Secure Email Validation Service

Lifetime Deals
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Validate single or bulk email addresses and keep your email list absolutely clean – at an unmatched speed and time.

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Kleanmail is a cloud-based email validation tool that helps you cleanse your customer database. With its capability to differentiate the valid and invalid email IDs, your emails are sent only to the right contacts.

  • Kleanmail lets you validate single or bulk email addresses and keep your email list absolutely clean – at an unmatched speed and time.
  • Similar To: Zerobounce, Clearout, Kickbox, Usebouncer, GetEmail
  • Intuitive UI and UX, easy-to-use platform. Helps with real-time, accurate, and fast email verification service.
  • Best for Freelancers, SMEs, HODs, CXO, Email Marketers, Digital marketing agencies, CRM teams, CMO & Lead generators/agencies who actively communicate with customers through emails, newsletters, marketing emails, and more.

You’ve probably heard that a clean email list is one of the most important things for your business, but who has time to verify all their email addresses manually? 

It’s tough to keep your email list clean. Instead, you spend hours trying to validate email addresses, and you’re never quite sure if they’re all valid. 

It’s no secret that verifying your email list is one of the most important things you can do to improve your email marketing results – one bad email address can ruin your sender reputation and get you blacklisted.

Keeping your email list clean not only helps you avoid deliverability issues but also helps you target your audience more accurately.

KleanMail is the solution to all of your email verification woes. Its real-time email verification tool is fast, accurate, and easy to use to help validate single or bulk emails in minutes – not hours or days.

Plus, it offers bulk email verification for large lists at an unmatched speed and time. So keep your email list clean and boost your deliverability rates today with KleanMail!

Kleanmail also effectively saves your domain/IP from being blacklisted by most email service providers, increasing the chances of your promotional emails landing in your customer’s inboxes.

Single Email Validation:

Kleanmail provides validation for a single email with a visual report on email format, disposable email check, mailbox existence check, spamtrap check, hard bounce status, and much more in minutes.

Bulk Email Validation:

Kleanmail can validate thousands of email ids in a single go. It checks each email id in the list for the features mentioned above, including all those checks performed for single email validation.

Kleanmail provides real-time updates on the progress of the validation process of the uploaded bulk and highlights issues, if any. The uploaded list can be in one of many formats (text, excel, JSON, etc.) for ease.

Email Validation APIs:

Kleanmail provides email verification APIs that integrate with every touch point where the user may enter his email id. These touchpoints could be web pages such as Landing pages, the registration process, newsletter, and other sign-up pages or back-end web calls that may pass on email id as a part of web data.

Its email address verification APIs use sophisticated, multilayered algorithms that test the email ids for genuineness and run various checks to identify disposable, fake, and irrelevant email ids. Kleanmail, email validation APIs, run these tests and check and validate ids in real-time.

Email Syntax Checker:

Email syntax validator checks and identifies the email ids that do not meet well-known email syntax rules in real-time. Email Syntax errors are one of the most common errors in email lists, and it is essential to remove them from the list.

Email syntax validation is essential for cleaning the email list and maintaining an online reputation. Kleanmail does real-time and accurate email address syntax checks in the shortest time and cleans your email list with more than 99% efficiency.

Spam Trap Checker:

Kleanmail spam email address checker identifies such email ids and helps you eliminate them from your campaign list. A spam trap email is a mailbox or domain set up to capture spam emails. When an email is sent to a spam trap, the receiving server records the sender’s IP address and domain reputation. 

Catch-All Domains Checker:

Kleanmail identifies catch-all email domains, reducing their impact on your marketing campaign.

Many organizations create a catch-all email id to guarantee that every email sent to them gets received, regardless of any errors. Still, a wrong catch-all email id within your list could negatively impact the success of your marketing campaign.

Hard Bounce Checker:

Kleanmail’s hard bounce email checker features check for such email ids and provide results in real-time, saving you time and money and maintaining your online reputation.

With Kleanmail, hard bounces automatically disappear from your email list, so you don’t pay to send them again. 

Disposable Email Cleaner:

Kleanmail successfully identifies such email ids and helps you prevent email bounces by providing an effective throwaway email cleaner. The emails sent to disposable email ids are never opened.

Domain & SMTP Validation:

Kleanmail, an email domain validator feature, checks the ISPs and removes all emails with invalid, inactive, parked domains, or invalid accounts. The email domain validator detects potential spam traps hidden among your contacts.  

MTA Validator:

Kleanmail is a power-packed solution that validates email addresses and scrubs the ones with bad MX records, and doesn’t let your online reputation be harmed. Mail Exchange (MX) records are DNS records necessary for delivering email to your address. A Mail Transfer Agent (MTA) uses these MX records to transfer emails between computers.


  • Disposable & Catch all domain detection
  • Spamtrap Detection
  • 30% more Email Validation KPIs than others​
  • Unlimited credit validity
  • API Integration with CRMs

The best part? You will pay for Kleanmail just once and can use it for a lifetime. Grab your lifetime deal today.

Plans & Pricing

Plan A
Save $1851 (97.4%)
  • 1 Million Email Verifications Per Year
  • Can Use A Maximum Of 100k Credits In A Month
  • Non-Stackable Plan
  • All Features and Updates to KleanMail
  • 60 Days Refund Policy
Plan B
Save $2901 (96.7%)
  • 2 Million Email Verifications Per Year
  • Can Use A Maximum Of 200k Credits In A Month
  • Non-Stackable Plan
  • All Features and Updates to KleanMail
  • 60 Days Refund Policy
Plan C
Save $4801 (96%)
  • 5 Million Email Verifications Per Year
  • Can Use A Maximum Of 500k Credits In A Month
  • Non-Stackable Plan
  • All Features and Updates to KleanMail
  • 60 Days Refund Policy
Plan D
Save $6701 (95.7%)
  • 10 Million Email Verifications Per Year
  • Can Use A Maximum Of 1 Million Credits In A Month
  • Non-Stackable Plan
  • All Features and Updates to KleanMail
  • 60 Days Refund Policy


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Frequently Asked Questions

What are catch-all domains?

A Catch-all domain receives all the emails sent to them regardless of whether it exists or not. This ultimately affects the open rates and domain reputation, too. With Kleanmail, be assured of sending emails only to existent and valid email IDs.

What are Spamtrap emails?

Spam traps are email addresses that are intentionally set up by ISPs, blacklists, and filter companies to identify and lure senders with the intention of blocking them. Though they appear to be valid, they do not belong to any person, hence emails sent to these IDs are immediately flagged. Presence of spam traps in the mailing list is a sign of bad list hygiene and list collection practices.

Kleanmail tool accurately reveals these spam traps and prevents the sender domain from being marked as spam.

How do I integrate the Kleanmail API verification service?

Kleanmail’s email validation API identifies all kinds of problematic email addresses in real time and flags them before they harm your email sender reputation. It uses a multi-layer testing algorithm that runs multiple checks and reveals all valid as well as disposable, fake and irrelevant email addresses.

Verify emails before they get to your CRM and integrate our API into your website registration process, landing pages, newsletter signup form and every customer touchpoint which collects emails.

Access to your Kleanmail account and click on the API section to generate the API key. Once you create API key that will use to verify your email id at source point. You can easily integrate our lightning fast validation API into your website or application, with only a few lines of code. Use our API Sandbox to test your implementation for all the different Email Validation Status Codes.

Do my email validation credits expire?

No, once you purchase credits, they will never expire. You can use those credits to validate your emails whenever you want.

Why is my file taking so long to process?

Typically, it takes around 2 to 4 hours to validate 100,000 mixed domain email addresses. You next obvious question is: “If someone is validating a million emails addresses, do I have to wait?” The answer is no, because we have multiple servers that process email addresses across different mailbox servers.

When we start experiencing high queue times, we start adding additional servers to handle the processing. We use all the resources we need to use in order to take care of our customers.

Why is my bounce rate high after cleaning?

There are many different factors that will cause emails to bounce that are unrelated to whether the actual email address is good or bad.

Here are some examples:

·         Your IP is blocked

·         The content your sending is being flagged as spam

·         You are exceeding the rate limits in place at certain ISP

·         Your email is not configured properly to the RFC Standards

·         Your mailing program is not handling domains that grey-list properly.

·         The recipient blocked you.

All of the examples above doesn’t mean the email address is invalid. It just means, there are other factors causing bounces that need to be addressed. To understand what’s causing the bounce you must have access to your SMTP Logs, and you have to analyze the SMTP Codes to determine why.

If you experience a high bounce rate and they are not being caused by any of the above issues we want to know about it. But we need the SMTP Bounce you received, in order to investigate.

Please provide the emails along with the SMTP Bounce message to support@kleanmail.com and we will investigate any issues related with cleaning.

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