2) MailboxValidator

MailboxValidator is a user-friendly bulk email list cleaning service that enhances email list quality by identifying invalid email addresses, reducing bounce rates, and improving sender reputation.
API Features
- Email Syntax Checker: Validates that the email address conforms to a standard format.
- MX Record Checker: Checks for the existence of mail server records in the DNS.
- Disposable Email Provider Checker: Checks to see if the email address is from a disposable email provider like Mailinator.
MailboxValidator Pricing
- BULK-TRIAL: $0.00 for 100 queries with standard support and a response time of less than 1 hour.
- BULK-1: $19.95 for 1,000 queries with email support and a response time of less than 4 hours.
- BULK-5: $39.95 for 5,000 queries with email support and a response time of less than 4 hours.
- BULK-10: $59.95 for 10,000 queries with email support and a response time of less than 4 hours.
- BULK-50: $149.95 for 50,000 queries with email support and a response time of less than 12 hours.
3) KleanMail Email Validation API

KleanMail Email Validation API offers a robust solution for verifying email addresses, ensuring that your email lists are accurate and up-to-date by detecting invalid, disposable, and role-based email addresses.
API Features
- Role-Based Email Detection: Identifies email addresses associated with roles (e.g., admin@, support@) to prevent sending to generic inboxes.
- Catch-All Domain Detection: Determines if a domain is configured to accept all emails, which can help in assessing the validity of email addresses.
- Greylisting Detection: Detects if an email server uses greylisting, a method to temporarily reject emails from unknown senders, to improve email deliverability.
KleanMail Email Validation API Pricing
BULK-TRIAL: $0.00 for 100 queries with standard support and a response time of less than 1 hour.
BULK-1: $19.95 for 1,000 queries with email support and a response time of less than 4 hours.
BULK-5: $39.95 for 5,000 queries with email support and a response time of less than 4 hours.
BULK-10: $59.95 for 10,000 queries with email support and a response time of less than 4 hours.
BULK-50: $149.95 for 50,000 queries with email support and a response time of less than 12 hours.
4) Validity BriteVerify

Validity BriteVerify offers real-time and bulk validation of email addresses, phone numbers, and mailing addresses to ensure data accuracy. It integrates with major marketing platforms and CRMs, helping businesses maintain clean databases, protect sender reputation, and improve communication efficiency.
API Features
- Real-Time Verification: Validates contact information at the point of capture to prevent invalid data from entering the database.
- Phone Number and Mailing Address Verification: Checks phone numbers and mailing addresses to ensure they are valid, preventing wasteful communication efforts.
- Integration with Existing Platforms: Offers ready-made integrations with major marketing platforms and custom integrations through an API suite, streamlining email marketing strategies.
Validity BriteVerify Pricing
- Pay-As-You-Go Pricing: Offers a range of verification bundles starting from 5,000 verifications at $40, with the cost per verification decreasing as the bundle size increases.
- 5,000 Verifications: $40, which equates to $0.0080 per verification.
- 10,000 Verifications: $80, maintaining the same per-verification cost of $0.0080.
- 20,000 Verifications: $150, reducing the per-verification cost to $0.0075.
- Subscription Pricing: Details are not explicitly listed on the page. Users are encouraged to contact the company for more information.
5) No2Bounce

No2Bounce is an email verification tool that specializes in catch-all email validation, offering high accuracy and real-time verification to ensure emails reach the correct inboxes. It integrates seamlessly with various CRM systems and provides high-grade data encryption to protect user data.
API Features
- 12-Second Validation: Promises to validate emails in less than 12 seconds, providing real-time verification.
- API Superiority: Uses actual email sending and a 24-hour wait period for catch-all addresses to ensure maximum accuracy.
- High Security Standards: Complies with GDPR, SOC 2, and PCI standards, ensuring high-grade data encryption and user data protection.
No2Bounce Pricing
- 25,000 Credits: $30 for 25,000 email verifications. Credits do not expire, and all features are included.
- 50,000 Credits: $50 for 50,000 email verifications. This plan also includes non-expiring credits and full feature access.
- 100,000 Credits: $90 for 100,000 email verifications. Users get non-expiring credits and access to all features.
- 250,000 Credits: $200 for 250,000 email verifications. The credits do not expire, and all features are available.
- 1,000,000 Credits: $700 for 1,000,000 email verifications. This plan includes non-expiring credits and full feature access.
What to Consider When Selecting a Dilli Labs Email Validation API Alternative?
- Real-Time Verification: Ensures that email addresses are validated instantly, preventing invalid data from entering your database and improving deliverability.
- Integration Capabilities: Look for APIs that offer seamless integration with major marketing platforms, CRMs, and other tools to streamline your email marketing strategies.
- Accuracy and Reliability: Choose a service that provides high accuracy in detecting invalid, disposable, and role-based email addresses to maintain a clean and actionable database.
- Security and Compliance: Ensure the API complies with data protection standards like GDPR, SOC 2, and PCI to safeguard user data and maintain trust.
- Scalability and Pricing: Opt for a solution that offers flexible pricing plans and can scale with your business needs, whether you require bulk validation or pay-as-you-go options.
Which One Should You Go With?
Each of these email validation services offers unique features and pricing plans, making them suitable for various business needs. Whether you prioritize real-time verification, integration capabilities, or high security standards, there's a solution that fits your requirements.
If you're looking for a reliable alternative, we recommend signing up with Abstract API. It combines high accuracy, fast response times, and strong privacy compliance, making it an excellent choice for maintaining a clean and actionable email database.