2) KleanMail Email Validation API

KleanMail Email Validation API offers a robust solution for verifying email addresses, ensuring that your mailing lists are accurate and up-to-date.
API Features
- Real-Time Verification: Instantly checks the validity of email addresses as they are entered, reducing the chances of fake or mistyped emails.
- Syntax and Domain Check: Ensures that email addresses conform to standard formats and verifies the existence of the domain.
- Disposable Email Detection: Identifies and flags temporary email addresses often used for spam or fraudulent activities.
KleanMail Email Validation API Pricing
KleanMail Email Validation API's pricing is not public. Contact their support for more info.
3) Validity BriteVerify

Validity BriteVerify is a comprehensive contact verification tool that validates email addresses, phone numbers, and mailing addresses to ensure data accuracy and improve communication effectiveness. It helps prevent bad data from entering databases, protecting sender reputation and enhancing marketing, sales, and customer service outcomes.
API Features
- Real-Time Verification: Validates contact information at the point of capture to prevent invalid data from entering the database.
- Bulk Verification: Allows for the validation of large volumes of stored data to identify and remove invalid email addresses, phone numbers, and mailing addresses.
- Integration with Existing Platforms: Offers ready-made integrations with major marketing platforms and custom integrations through an API suite, streamlining the email marketing process.
Validity BriteVerify Pricing
- 5,000 Verifications: $40 ($0.0080 per verification).
- 10,000 Verifications: $80 ($0.0080 per verification).
- 20,000 Verifications: $150 ($0.0075 per verification).
- 50,000 Verifications: $325 ($0.0065 per verification).
- 100,000 Verifications: $600 ($0.0060 per verification).
4) No2Bounce

No2Bounce is an email verification tool designed to validate emails, ensuring they reach the correct inboxes with high accuracy and real-time verification, while integrating seamlessly with various CRM systems.
API Features
- 12 Second Promise: Validates email addresses in less than 12 seconds, ensuring real-time verification and high-speed performance.
- API Superiority: Sends actual emails to verify risky addresses and waits up to 24 hours for catch-all email addresses, providing maximum accuracy.
- Bulk Email Verifier API: Automates bulk email validation with zero manual involvement, following 34 patterns of email validation to ensure accuracy.
No2Bounce Pricing
- 25,000 Credits: Each credit is priced at $0.0012 per verification. This plan costs $30.
- 50,000 Credits: Priced at $50, this plan offers a rate of $0.0010 per verification.
- 100,000 Credits: Costs $90, with each credit priced at $0.0009 per verification.
- 250,000 Credits: Available for $200, offering a rate of $0.0008 per verification.
- 500,000 Credits: Priced at $350, this plan provides a rate of $0.0007 per verification.
5) SafetyMails

SafetyMails is a real-time email verification tool designed to protect websites, landing pages, and apps against invalid and risky emails, ensuring that only real and available subscribers are kept in the database.
API Features
- Domain Typo Correction: Automatically corrects domain typos to retain potential leads and avoid losing promising contacts.
- Spamtrap Avoidance: Prevents spamtraps from entering mailing lists, protecting sender reputation and ensuring deliverability.
- Customizable API Return Messages: Allows customization of API return messages for branding purposes, enhancing user experience and consistency.
SafetyMails Pricing
- Pay as you go: Verify up to 5,000 emails for $33.00. Credits do not expire.
- Monthly subscription: 5,000 credits monthly for $31.35 per month. Required to use the API.
- Annual subscription: 5,000 credits monthly for $356.40 per year. Required to use the API.
- Enterprise plans: Custom pricing based on specific needs. Contact support for more details.
- Free trial: Limited credits available for testing purposes. No cost involved.
What to Consider When Selecting a MailboxValidator Alternative?
- Real-Time Verification: Ensures that email addresses are validated instantly as they are entered, reducing the chances of fake or mistyped emails.
- Bulk Verification: Allows for the validation of large volumes of stored data, identifying and removing invalid email addresses efficiently.
- Integration with Existing Platforms: Offers seamless integration with major marketing platforms and CRMs, streamlining the email marketing process.
- Privacy Compliance: Adheres to industry standards like GDPR and SOC 2, ensuring that user data is handled ethically and securely.
- Customizable API Return Messages: Enhances user experience by allowing customization of API return messages for branding purposes.
Which One Should You Go With?
Each of the email validation tools discussed offers unique features and benefits, making any of them a solid choice for ensuring the accuracy and reliability of your email lists. However, if you're looking for a comprehensive solution that combines real-time verification, privacy compliance, and robust support, we recommend signing up with Abstract API.
With its extensive features, ease of integration, and customer-focused support, Abstract API stands out as a top contender for those seeking an effective email validation service. Explore their offerings and see how they can help streamline your email verification process.