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The original page address was https://mails.so/

    
 
+10.572 users 
Simple, fast
, and secure
email validation service
Email Validation API: Clean Lists, Boost Deliverability & Maximize ROI.
Remove fake emails and spam users from your email lists.

GDPR Compliant 
99.99% availability 
Includes 50 free credits 
[Image: No credit card required]  
Deliverable 
This address accepts email
The recipient's email server has confirmed its deliverability.

Deliverable 
This email address is valid
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[Image: Maria González]   
Maria Gonzálezalmost 55 years ago
I've been using the service for our email validation and it's been incredibly reliable . The interface is intuitive, and we've seen improved delivery rates by 40%  since we started using it.

[Image: David Thompson]   
David Thompsonalmost 55 years ago
Very quick and easy to configure. Took less than 5 minutes to set up  and start validating emails. Exactly what I needed without the complexity of other services.

[Image: Isabella Romano]   
Isabella Romanoalmost 55 years ago
The API integrates seamlessly with our platform. It accurately identifies invalid emails , helping us maintain a clean, active list. Our engagement rates have improved significantly.

[Image: Alexandra Kim]   
Alexandra Kimalmost 55 years ago
Finally found a service that actually delivers on its promise. Cleaned over 50,000 emails  from our database and our reputation score has improved dramatically.

[Image: Michael Chen]   
Michael Chenalmost 55 years ago
What sets them apart is their excellent customer support . Any questions I had were answered within hours. The validation accuracy is impressive too.

[Image: Laura Martinez]   
Laura Martinezalmost 55 years ago
Been using it for 6 months now and it's prevented countless spam issues . The real-time validation feature is fantastic for our signup forms.

[Image: Maria González]   
Maria Gonzálezalmost 55 years ago
I've been using the service for our email validation and it's been incredibly reliable . The interface is intuitive, and we've seen improved delivery rates by 40%  since we started using it.

[Image: David Thompson]   
David Thompsonalmost 55 years ago
Very quick and easy to configure. Took less than 5 minutes to set up  and start validating emails. Exactly what I needed without the complexity of other services.

[Image: Isabella Romano]   
Isabella Romanoalmost 55 years ago
The API integrates seamlessly with our platform. It accurately identifies invalid emails , helping us maintain a clean, active list. Our engagement rates have improved significantly.

[Image: Alexandra Kim]   
Alexandra Kimalmost 55 years ago
Finally found a service that actually delivers on its promise. Cleaned over 50,000 emails  from our database and our reputation score has improved dramatically.

[Image: Michael Chen]   
Michael Chenalmost 55 years ago
What sets them apart is their excellent customer support . Any questions I had were answered within hours. The validation accuracy is impressive too.

[Image: Laura Martinez]   
Laura Martinezalmost 55 years ago
Been using it for 6 months now and it's prevented countless spam issues . The real-time validation feature is fantastic for our signup forms.

[Image: Maria González]   
Maria Gonzálezalmost 55 years ago
I've been using the service for our email validation and it's been incredibly reliable . The interface is intuitive, and we've seen improved delivery rates by 40%  since we started using it.

[Image: David Thompson]   
David Thompsonalmost 55 years ago
Very quick and easy to configure. Took less than 5 minutes to set up  and start validating emails. Exactly what I needed without the complexity of other services.

[Image: Isabella Romano]   
Isabella Romanoalmost 55 years ago
The API integrates seamlessly with our platform. It accurately identifies invalid emails , helping us maintain a clean, active list. Our engagement rates have improved significantly.

[Image: Alexandra Kim]   
Alexandra Kimalmost 55 years ago
Finally found a service that actually delivers on its promise. Cleaned over 50,000 emails  from our database and our reputation score has improved dramatically.

[Image: Michael Chen]   
Michael Chenalmost 55 years ago
What sets them apart is their excellent customer support . Any questions I had were answered within hours. The validation accuracy is impressive too.

[Image: Laura Martinez]   
Laura Martinezalmost 55 years ago
Been using it for 6 months now and it's prevented countless spam issues . The real-time validation feature is fantastic for our signup forms.

[Image: Crown]  
“Mails.so delivers all we need in an email validation service: top security, scalability, performance, and extensive integrations”.

[Image: Avatar]  A happy customer, probably 
What does mails.so exactly do?
tl;dr — Remove invalid recipients, block fake users and bots, prevent fraud, and help you save money.

Format check 
Delivery check 
Email profiling 
Blocklists 
No-code APIs 
Mailing lists 
Place us after your sign up forms and landing pages.
We'll make sure you only get real users.

2-3% of users make spelling mistakes 
3-4% make up their address on signup  
~2% are spam signups with fake addresses 
~1% use temporary or catch-all addresses 
Use cases for mails.so
If you're running a newsletter, an e-commerce, a SaaS, or marketing campaigns, mails.so is for you.

Email marketing
Protect you from emailing non-existent addresses, which can increase your bounce rate and damage your reputation.

[Image: Bounce rate]  
Bot signups
Detect invalid addresses before they register, prevent spam and fake users and keep a high quality user database.

[Image: Bot signups]  
Fraud prevention
Detect disposable email addresses, catch users trying to use multiple accounts and prevent fraud before they can do any harm.

[Image: Fraud detection]  
[Image: Crown]  
“Mails.so delivers all we need in an email validation service: top security, scalability, performance, and extensive integrations”.

[Image: Avatar]  Another happy customer, maybe 
[Image: Integrations]  
No-code integrations with your favourite tools
We've built simple integrations with the most famous no-code tools. Start building today with🧡 Zapier or 💜 Make.

Get started
Reliability 
Up and running now, then, and always
We know how important it is to have a reliable service. That's why we've built a rock solid service that has been running with a 99.9% uptime consistently.

Start for free
Service status 
Operational
mails.so 100.00% uptime 
API 99.993% uptime 
Get started with 85% off your first month
All paid plans include API access and list validation.
Need extra validations? No problem. We've got you covered.

Enterprise
$1,899 
per user
per month
  • Enable list validation 
  • Unlimited validations 
  • 99.99% Guaranteed Uptime SLA 
  • Priority support 
Unlimited
$249 $37.35 
per user
per month
  • Enable list validation 
  • Unlimited validations 
Most popular 
Business
$49 $7.35 
per user
per month
  • Enable list validation 
  • 50,000 validations per month included 
  • $0.002 per extra validation 
Pro
$24 $3.60 
per user
per month
  • Enable list validation 
  • 10,000 validations per month included 
  • $0.005 per extra validation 
Frequently Asked Questions
Can’t find the answer you’re looking for? Don’t hesitate to get in touch with our customer support team.

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