2) MailerSend

MailerSend is a comprehensive email service provider offering a range of tools for sending and receiving emails, managing accounts, and ensuring email deliverability. It features an email API, SMTP relay, dynamic email templates, inbound email routing, and advanced email verification capabilities.
API Features
- Advanced Verification: Detects typos, syntax errors, catch-all emails, disposable emails, and full inboxes to ensure email accuracy.
- Dynamic Email Templates: Allows for the creation of personalized emails on a mass scale using a single template.
- Inbound Email Routing: Automatically parses incoming emails and integrates them into applications for seamless workflow management.
MailerSend Pricing
- Hobby (Free): Offers 3,000 emails per month with basic features like Email API, SMTP relay, and a drag & drop email builder.
- Starter: Costs $25/€25/£25 per month and includes 50,000 emails, 100 SMS, and 100 email verification credits. Additional features include 50 sender identities and inbound routing.
- Professional: Priced at $25/€25/£25 per month, this plan provides 50,000 emails, 100 SMS, and 100 email verification credits. It also offers 1,000 domains and unlimited templates.
- Enterprise: Pricing is not public. Contact their support for more info.
3) Bouncer Email Verification API

Bouncer Email Verification API is an ultrafast, robust, and easy-to-integrate tool designed to validate email addresses and verify their deliverability, supporting both real-time and batch verification for various applications.
API Features
- Deep Verification of Catch-All and Anti-Spam Filter Protected Email Addresses: This feature sets Bouncer apart by offering the highest coverage and the lowest amount of unknown results, making it highly reliable for complex email setups.
- Rich Output: The detailed and meaningful data provided by the API helps users make informed decisions about their email lists, enhancing the effectiveness of their email campaigns.
- Organization Management: The ability to manage multiple organizations and teams with ease, along with advanced security settings, makes Bouncer highly suitable for enterprise-level applications.
Bouncer Email Verification API Pricing
- Pay-as-you-go Pricing: Purchase credits in bulk with volume discounts. Credits never expire.
- Starter Plan ($25/month): Includes 250 test emails and monitoring for 10 IPs/domains.
- Standard Plan ($125/month): Offers 1,000 test emails and monitoring for 25 IPs/domains.
- Pro Plan ($250/month): Provides 2,500 test emails and monitoring for 50 IPs/domains.
- Enterprise Plan: Pricing is not public. Contact their support for more info.
4) Bouncify

Bouncify is an email validation API that enhances email deliverability by validating email addresses in real-time and in bulk, ensuring the accuracy and validity of collected emails.
API Features
- Real-Time Email Verification: Validate email addresses in real-time to prevent fake registrations and collect valid emails during sign-up.
- Bulk Email Verification: Verify large email lists through a bulk email verification API, ensuring the accuracy and validity of collected emails.
- High Accuracy: Multiple advanced checks ensure high accuracy in email validation, providing dependable email lists.
Bouncify Pricing
- 10K Verifications: Costs $19 and includes 10,000 email verifications at $0.0019 per email.
- 30K Verifications: Priced at $39, offering 30,000 email verifications at $0.0013 per email.
- 100K Verifications: Available for $99, providing 100,000 email verifications at $0.0010 per email.
- 200K Verifications: Costs $159 and includes 200,000 email verifications at $0.0008 per email.
- 500K Verifications: Priced at $279, offering 500,000 email verifications at $0.0005 per email.
5) MailValidation.io Email Validation Services

MailValidation.io Email Validation Services offers an easy-to-use REST API for developers and bulk email validation for marketers, ensuring email addresses are real and deliverable by performing checks like blacklist verification and mailbox type identification.
API Features
- Email Blacklist Check: This feature checks if the email addresses are on any blacklists to prevent sending to potentially harmful addresses.
- Mailbox Type Identification: This feature identifies the type of mailbox (e.g., free, disposable, etc.) to help users understand the quality of their email list.
- HubSpot Email Validation: This integration allows users to validate email addresses directly within their HubSpot CRM.
MailValidation.io Email Validation Services Pricing
- Lite: Up to 1,999 emails per month at $0.005 per email, costing $10 monthly. Includes all features.
- Starter: Up to 9,999 emails per month at $0.0045 per email, costing $45 monthly. Includes all features.
- Professional: Up to 19,999 emails per month at $0.004 per email, costing $80 monthly. Includes all features.
- Business: Up to 100,000 emails per month at $0.0033 per email, costing $330 monthly. Includes all features.
- Enterprise: Volume plans available up to 20 million emails per month. Pricing to be determined (TBD). Includes all features.
What to Consider When Selecting a Amazon Email Address & Phone Number Validation API Alternative?
- Real-Time Verification: Ensures immediate validation of email addresses and phone numbers, preventing fake registrations and improving data accuracy.
- Bulk Operations: Supports large-scale validation tasks, allowing users to verify extensive lists of emails and phone numbers efficiently.
- Advanced Filtering: Detects disposable emails, spam traps, and toxic domains, enhancing the quality of your contact lists.
- Privacy Compliance: Adheres to regulations like GDPR and CCPA, ensuring that user data is handled securely and legally.
- Integration Ease: Offers well-documented APIs and multiple endpoints, making it simple to integrate into various applications and workflows.
Which One Should You Go With?
Each of the email validation and verification APIs discussed offers unique features and pricing plans, making them suitable for various needs and budgets. Whether you prioritize real-time verification, bulk operations, or advanced filtering, there's a solution that fits your requirements.
If you're looking for a robust alternative, we recommend signing up with Abstract API. With its comprehensive features, privacy compliance, and ease of integration, Abstract API stands out as a reliable choice for ensuring the accuracy and deliverability of your email lists.