Email Verification and List Cleaning for Better Campaign Performance

Verify every address before campaigns and clean your lists continuously to reduce bounce rates, protect sender reputation, and improve deliverability and engagement across your email programs.

Run a quick validation test with any email address

Upload Bulk List

Trusted by 6,000+ businesses protecting list quality, sender reputation, and inbox placement

"Check365 helped us clean a large contact list before a campaign launch. The validation results were accurate and easy to review."

Michael Carter

Email Marketing Manager

"The platform is straightforward and reliable. We use it regularly to verify contacts before sending email campaigns."

Priya Patel

Growth Marketing Manager

"We validated thousands of records in a short time. The process was fast and the reporting was clear and useful."

Li Wei

CRM Manager

"The validation process is simple and easy to follow. It helps us maintain a healthier contact database."

Sarah Mitchell

Marketing Manager

"Check365 improved the quality of our prospect lists and helped our team focus on better opportunities."

Rajesh Sharma

Business Development Manager

"The reports are easy to understand and provide the information we need before launching campaigns."

Yuki Nakamura

Demand Generation Manager

"We verify lead lists before outreach and the process is efficient. The platform has become part of our workflow."

Chinedu Okafor

Sales Development Manager

"Check365 saves our team time by helping us identify problematic addresses before sending important emails."

Emily Parker

Marketing Operations Manager

"The platform processes large contact databases quickly and consistently delivers dependable results."

Chen Yuting

Revenue Operations Manager

"The service is easy to use and gives us greater confidence in the quality of our email database."

David Wilson

Marketing Director

"Check365 helps us improve list quality and supports better communication with prospects and customers."

Amina Bello

Customer Acquisition Manager

"We use Check365 before client campaigns. The validation results are clear and help us prepare cleaner lists."

Hiroshi Tanaka

Agency Owner

"Keeping contact data accurate is important for our business. Check365 has been a valuable addition to our process."

Arjun Mehta

Founder

"The platform helped us improve customer email data quality and reduce issues caused by invalid addresses."

Zhang Min

E-commerce Manager

"The validation process is fast, accurate, and easy to understand. It has improved the quality of the leads we work with every day."

James Thompson

Lead Generation Specialist

"Check365 helped us clean a large contact list before a campaign launch. The validation results were accurate and easy to review."

Michael Carter

Email Marketing Manager

"The platform is straightforward and reliable. We use it regularly to verify contacts before sending email campaigns."

Priya Patel

Growth Marketing Manager

"We validated thousands of records in a short time. The process was fast and the reporting was clear and useful."

Li Wei

CRM Manager

"The validation process is simple and easy to follow. It helps us maintain a healthier contact database."

Sarah Mitchell

Marketing Manager

"Check365 improved the quality of our prospect lists and helped our team focus on better opportunities."

Rajesh Sharma

Business Development Manager

"The reports are easy to understand and provide the information we need before launching campaigns."

Yuki Nakamura

Demand Generation Manager

"We verify lead lists before outreach and the process is efficient. The platform has become part of our workflow."

Chinedu Okafor

Sales Development Manager

"Check365 saves our team time by helping us identify problematic addresses before sending important emails."

Emily Parker

Marketing Operations Manager

"The platform processes large contact databases quickly and consistently delivers dependable results."

Chen Yuting

Revenue Operations Manager

"The service is easy to use and gives us greater confidence in the quality of our email database."

David Wilson

Marketing Director

"Check365 helps us improve list quality and supports better communication with prospects and customers."

Amina Bello

Customer Acquisition Manager

"We use Check365 before client campaigns. The validation results are clear and help us prepare cleaner lists."

Hiroshi Tanaka

Agency Owner

"Keeping contact data accurate is important for our business. Check365 has been a valuable addition to our process."

Arjun Mehta

Founder

"The platform helped us improve customer email data quality and reduce issues caused by invalid addresses."

Zhang Min

E-commerce Manager

"The validation process is fast, accurate, and easy to understand. It has improved the quality of the leads we work with every day."

James Thompson

Lead Generation Specialist

EU GDPR CompliantEU GDPR Compliant
CCPA CompliantCCPA Compliant
SOC 2 CompliantSOC 2 Compliant

Core Framework

The Four Pillars of Email Performance

Every successful email program depends on four fundamentals: accurate contacts, audience insight, clean data, and deliverability confidence. Check365 helps you strengthen each pillar before every campaign.

01 Validate Contacts

Real-time Email Validation

Verify email addresses before they enter your CRM, applications, or workflows. Reduce wasted outreach and maintain higher-quality customer data from the start.

  • Detect invalid and risky addresses
  • Identify disposable emails instantly
  • Validate through dashboard or API

Invalid email

Trusted Email Checker and Verification Platform

Advantages of Using Check365 For Email Validation

Improved Deliverability

By removing the wrong and spammy email addresses, your campaign will be delivered to the right customer and will increase the open rate

Maintaining Good Sender Reputation

As you are not sending to any non-existence email address, your sender reputation will be preserved and will reduce the chance of getting into spam box.

Cost Minimizing

Your investment will not be wasted as you are eliminating the invalid email addresses before sending emails which will increase your ROI.

Advanced Insights

Our dashboard will show you some advanced insights about your email campaign and how many emails are valid, invalid, and risky.

Meeting Compliance For Better Privacy

We ensure all data are handled safely with top-notch security to meet the compliance and data safety

Check365

Easy API Integration

Plug Check365 into your existing workflows with simple, reliable API calls.

Validate individual email addresses or entire lists with fast, reliable API responses built for applications, integrations, and automated workflows. Detect email providers, identify personal and professional accounts, and verify addresses before they impact your campaigns, CRM, or business processes.

  • Single and list validation
  • Reliable results for automation and CRM integrations
  • Simple REST API with JSON responses
cURL iconcURL
JavaScript iconJavaScript
Node.js iconNode.js
Python iconPython
PHP iconPHP
Go iconGo
Java iconJava
C# iconC#
Go to API Documentation

Trusted by teams building applications on:

AWS
Azure
GCloud
Alibaba Cloud
Oracle Cloud
DigitalOcean

Integrates With

Works with the platforms your team already uses

Connect Check365 to your marketing stack and keep your data pipeline clean from list import to campaign send.

MailchimpMailchimp
HubSpotHubSpot
KlaviyoKlaviyo
BrevoBrevo
ActiveCampaignActiveCampaign
OmnisendOmnisend

Flexible Pricing Plans to Fit Your Needs

It doesn’t matter what size your business is, our tool will work well for you. Credits pricing are based on the number of email validations you need. and you can buy more credits as you go. the higher the number of credits you buy, the lower the cost per credit.

  • Get 100 credits on sign up
  • Pay as you go pricing model
  • Email validation cost 1 credit
  • Starting from $0.0025 per credit

Popular credit packages

Buy Credits
10000
Allowed Email Validation
10000
Cost per credit
$0.002500
Total Amount (USD)
$25.00

Credits

10,000
2000 (Minimum)500000 (Maximum)

Enterprise

For businesses that need a more robust solution, and validation at scale.

  • Unlimited email validations
  • Custom Data Integration Support
  • Dedicated Account Manager
  • Custom Pricing
Contact Sales

Save Time and Effort with our secure email validity checker

Check365 works with all types of email systems. Check the validity of emails like Microsoft 365, Gmail, Yahoo!, AOL, etc. and can bring success to your email marketing campaign.

24/7

Customer Support

99%

Percent Accuracy

10M+

Emails Scanned Daily

Frequently Asked Questions

Have a question? We have the answer. Browse our frequently asked questions to get quick information on our email validation services.

What is email validation?

Email validation is the process of verifying that an email address is valid and deliverable. It is an essential step in maintaining a clean and up-to-date email list, reducing bounce rates, and protecting your sender reputation.

Why is email validation important?

Email validation is important because it ensures that your emails reach the right inbox. By verifying email addresses, you can reduce bounce rates, improve deliverability, and protect your sender reputation.

How does email validation work?

Email validation works by checking the syntax, domain, and mailbox of an email address to ensure it is valid and deliverable. It uses a combination of algorithms and databases to verify the accuracy of an email address.

What are the benefits of email validation?

The benefits of email validation include reduced bounce rates, improved deliverability, and enhanced sender reputation. By verifying email addresses, you can ensure that your emails reach the right inbox and are not marked as spam.

Is the API easy to integrate?

Yes, our API is easy to integrate into your software. We provide comprehensive documentation and support to help you get started quickly and easily.

Grow faster with cleaner customer data.

Get Started Today