Bulk Email Verifier & Validation Service
Email Verifier
Verify a single email address or bulk email list using our email checker
Validate Emails in Seconds | Try our Free Email Verifier
Our Guarantee - Bounce Rate reduced to 3% or Less
We verify and check the status of an email address in real-time and give a guaranteed deliverability score
Trusted By Businesses of All Sizes Worldwide
Over 80,000+ Companies & Organisations Already Trust Us!
How to Verify Any Email Address in 4 Simple Steps
Whether you're verifying a single email address or running bulk email verification on thousands,
Clearout makes it fast, accurate, and completely automated.
Input one email address at a time, paste up to 10 email addresses, or upload CSV/XLSX file for bulk email list verification.
Inbox validity, MX lookup, SMTP ping, spam trap detection, disposable email detection, catch-all detection, Syntax check, and 14+ more checks run simultaneously.
Each email is labeled as Valid, Invalid, Catch-All, Disposable, Gibberish, Free, or Role-Based with an AI Verdict.
Download your clean list as CSV, export to your CRM or ESP, or pull results via the real-time email verification API.
Bulk Email Verifier
Validate a bulk email list
Sending emails to invalid email addresses increases bounce rate and thereby damages your sender reputation. Clearout's bulk email checker helps you verify large volumes of email addresses to clean your email list. What's more? We provide additional information on why an email is valid or invalid along with guaranteed deliverables to reduce your bounce rate to 3% or less.


Quick Email Verification
Verify individual email addresses
Quickly verify single email address with our accurate email checker tool. Just input the email address you want to verify, click on validate and let Clearout do its magic. We test your email address on multiple validation checks without sending an email to the recipient. Maintain your list hygiene by adding only valid email addresses to your list.
Email Verifier API
Integrate with API to scale email verification operation
Scale and automate your email verification needs using Clearout's email validation API. From solopreneurs to big enterprises, we've built our API for everyone. We support all programming languages so you can easily add our API to your tech stack and verify emails instantly or in bulk.
Furthermore, in a workflow scenario the webhook can be configured to capture the verification result, which could require more time to complete.


On-Form Real Time Email Verification
Filter bots and spam form fills at the point of capture
Scale and automate your email verification needs using Clearout's email validation API. From solopreneurs to big enterprises, we've built our API for everyone. We support all programming languages so you can easily add our API to your tech stack and verify emails instantly or in bulk.
Furthermore, in a workflow scenario the webhook can be configured to capture the verification result, which could require more time to complete.
99%+ Accuracy. 20+ Checks.
No Other Email Checker Comes Close.
Most email validators run 3 to 5 basic checks. Clearout runs 20+ layered validation checks, including a proprietary AI verdict, giving you accuracy no basic tool can match, and 4x higher ROI compared to any other tool in the market.
Why Email Address Verification Matters for Every Send
Email verification isn't a one-off task but an ongoing process. A well-maintained list will do wonders for your sender reputation and will cut down the number of bounces your campaigns receive.
Improve Email Deliverability
Emails sent to verified email addresses have less bounce back, less spam complaints, and will better hit inbox placement. This results in ISPs rewarding senders with clean lists; your emails reach the inbox, not the spam folder.
Protect Your Sender Reputation
A single spam trap or a spike in hard bounces can blacklist your domain. Clearout's email validator catches risky addresses before they damage the sender's reputation you've built over time.
Reduce Bounce Rates Significantly
Every hard bounce signals a problem to your ESP. Verify email lists before every campaign and eliminate invalid addresses, keeping your bounce rate under control so that ESPs are comfortable.
Cut ESP Costs on Every Campaign
Most ESPs charge by subscriber count or email volume. Bulk email verification removes invalid and duplicate addresses from your list, directly reducing your monthly bill and improving cost per conversion.
Boost Engagement Across Every Campaign
Regular email address verification ensures you're only sending to real, active inboxes, which raises open rates and click-through rates. Better engagement signals push future campaigns further up the inbox.
Keep Your CRM Clean
Unverified email addresses clog your CRM, skew results, and create wasted effort on sales. Clearout helps you keep your contact data clean and reliable, so your targeting, segmentation, and personalization work the way they're supposed to.
Industry-Leading Email Validation Checks
Our email verifier goes through an intensive 20+ validation checks to deliver accurate results
Greylisting Verification
Innovative anti-greylisting method verifies email status quickly without compromising turnaround time
Catch-All Verification
Identify the catch-all type addresses to avoid emailing thereby improving the overall deliverability hygiene
Syntax Validation
Fully cleans your email list by conforming invalid syntax to the standard format
Block Verification
This email tester will check against known DNSBLs and URI DNSBLs to stay a step away from the honeypot
Yahoo, AOL Validation
Provides the highest industry mail performance ratios for Yahoo and AOL with 96%+ accuracy
Gibberish Check
Identifying and calling attention towards random email addresses
Remove Sub-Address
Normalizes the sub-address from the Gmail/Outlook/Yahoo/iCloud to avoid multiple email addresses pointing to the same inbox
Auto Suggestion
Eliminates spelling errors and typos in the email addresses by auto-suggesting
Duplicate Removal
Removes all duplicate email addresses automatically and it comes free of cost
Disposable Email Verification
Verifies the email addresses to check if it is from a disposable email provider
Extended SMTP Validation
Verifies SMTP providers for every email address to determine the active mail servers
SpamTrap Detection
Multi-layered algorithm determining chances of an email address to be a spam trap!
Domain Verification
Checks for the successful network connection to the mail server domain
MX Record Verification
Validates priority based MX records for available Mail Exchange servers to know the mailbox status
Mail Quota Verification
Verifies the mailbox to ensure it accepts new emails
Mailbox Error Verification
Verifies all kinds of mailbox errors without sending any payload to the given email address
Guaranteed Deliverables
Guaranteed email delivery to the recipient's mailbox with no bounce back
Role Account Verification
Identifies all role-based email addresses like admin, support, or sales from the list
Verification Time Taken
Measures the response time for every email address by a simple open relay check
Verification Timestamp
Clearout email verifier lets you know when the email address in your list got verified for your better understanding
Free Account Verification
Checks whether the email addresses are using free services such as Gmail and Hotmail or not
Clearout vs ZeroBounce
- Higher accuracy on catch-all domains
- Better pricing for high-volume bulk jobs
- More granular result categories
- 10x Faster bulk processing speeds
Clearout vs NeverBounce
- Real-time API with higher rate limits
- Guaranteed Deliverables for no bounces
- Anti-Greylisting support
- Allowlist/Blocklist for domain control
Why Marketers Choose Us
- 99%+ accuracy on all email types
- Credits never expire, Flexible Pricing
- Real human support + Guaranteed 99.9% SLA
- Enterprise-Graded Compliance - ISO 27001 & SOC2 Type II certified
Who Uses Clearout Email Validator and Why
From solo marketers to enterprise teams, see how different businesses use Clearout
and why it matters for their workflows.
High bounce rates reduce your deliverability and even get your ESP account suspended. Email marketers use Clearout to clean lists before every big campaign, protecting sender reputation and ensuring campaigns land in the inbox, not spam.
WHAT CLIENT SAYS
Your Success, Our Proof.

Hayk Saakian
Logic Inbound, Co-founder
After trying Clearout, I almost never see any bounces or failed deliveries and our open rate is as high as 82% sometimes because the quality of our list is good now. The guaranteed deliverables features gives us a lot of confidence in Clearout as a product.

Deepak Shukla
Pearl Lemon, Founder & CEO
We as a lead generation agency were looking for a provider that could help us clean emails at scale. Clearout has proven to be an excellent resource to help us with that journey. Increasing our deliverability by 23%, it's now part of our go-to tool.

Paul Mendoza
SigParser, Co-founder
It works amazingly well at validating email addresses with great API and support. It was able to identify about 10% of the invalid contacts in our database. There are other products for email verification but Clearout by far has the best price and easiest to use.
Connect Your Tools
Improve Data Health With Our Integrations
Start Verifying Emails Free Today
Join 80,000+ businesses that use Clearout to verify email addresses, reduce bounce rates, and keep every campaign deliverable. 100 free credits — no credit card needed.
Frequently Asked Questions
Everything you need to know about email verification, bulk validation, and how Clearout works.
Email verification is the process of checking if an email address is valid and can receive emails. By verifying email addresses using an online email list verification tool, you can reduce bounce rates, improve email deliverability rates, and maintain a clean email list.
AI email list validation offers identification of typos, gibberish and other invalid emails quickly as it continuously learns from vast datasets, adapting to new email patterns and recognizing potential threats like spam traps and or disposable emails. If you're looking for stopping bad emails in their tracks at lightning speed, AI email validation is your best bet.
AI verdict is an intelligent decision-making system that analyzes email addresses on various parameters, including typos, format, domain credibility and more. Clearout's AI provides a final verdict on each email whether to accept, reject or further review an email address.
The Email Verifier directly connects to the SMTP server.
Bounce rate refers to the percentage of emails that are not delivered successfully to the recipient's inbox. A high bounce rate can negatively impact your sender reputation and email deliverability. To maintain a positive sender reputation and avoid high bounce rates, it's crucial to bulk verify your email list before sending out campaigns.
Yes, currently, we are at 96% Accuracy compared to other domains.
Once an account is created, you can validate 100 email addresses for free.
With Clearout, you can easily verify 100 emails in bulk for free by either uploading your list or importing it from your favorite tools like HubSpot, Apollo, ActiveCampaign and more. Clearout's bulk email verifier offers both API and bulk email verification.
Clearout accepts CSV and XLSX file uploads up to 2GB. You can also import directly from connected tools like HubSpot, Apollo and ActiveCampaign without manual file uploads.
Clearout is GDPR, SOC2 and ISO 27001 compliant, your data is encrypted in transit and at rest, never shared, and automatically deleted after 30 days.
Yes! Clearout Email Verifier can be seamlessly integrated with all programming languages using API for developers.
Clearout Email Verifier performs a list of 20+ validation checks on every email address which included the following-
- Email Format Validation: Our email verification tool checks if the email address is in a valid format, such as [email protected].
- Catch-All Domain Check: Our tool checks if the server has a accept-all policy that accepts any email address sent to that domain.
- Gibberish Email Address Detection: We make sure the email address doesn't appear to be a random string of characters, like [email protected].
- Disposable Email Address Detection: Our tool checks if the email address uses a disposable domain name.
- Role-based Email Address Detection: It Identifies all role-based email addresses like admin, support or sales from the list.
- MX Record Check: We check if the domain has an MX record. If not, the email address cannot receive emails.
- Extended SMTP Check: Verifies SMTP providers for every email address to determine the active mail servers.
Clearout's AI email verification stands out by combining machine learning with over 20+ validation checks to ensure highest accuracy of 99%. Our AI continuously learns from vast datasets in real time, enabling it to detect emerging email patterns such as the ones used in gibberish or new disposable domains. This state-of-the art comprehensive approach helps businesses maintain a high-quality email list, ensuring a higher ROI from email campaigns.
Integrating machine learning to our proprietary algorithms and checks boosts the accuracy of email verification to 99%.
Sending emails to invalid email addresses can lead to a high bounce rate which can negatively impact your sender reputation. Frequent bounces signal to ISPs that you might be sending unsolicited or low-quality emails resulting in your future emails being marked as spam or even blocked. To avoid this, it is crucial to validate your email lists before sending out emails.
Yes, you can verify email addresses in real-time. Clearout supports email verification at the point of capture by stopping invalid, fake, spammy, disposable & bad email addresses at the time of form fills. This helps you maintain the hygiene of your database. You can also use our RESTful API, Javascript widget or Wordpress plugin to verify emails in real-time at point of capture.
Yes, Clearout email verifier can Identify Catch-all email addresses with utmost accuracy.
1 Email Verification costs 1 credit. You can purchase the required credits from here.
You can verify up to 1 million emails per upload with Clearout. There are no daily limits on paid plans, upload your list in CSV or XLSX format.
Clearout verifies 10,000 emails in approximately 3-4 minutes. Large lists are processed in parallel so turnaround stays fast even at high volumes.
Clearout automatically detects and removes duplicate email addresses from your uploaded list, so you're only charged credits for unique emails verified.
Check our help docs or contact us.















