2) Bouncer Email Verification API

The Bouncer Email Verification API is a powerful tool designed to validate email addresses and verify their deliverability. It offers easy integration, robust support, and scalability, making it ideal for various use cases, including bulk email validation and real-time verification to prevent typos and disposable email addresses.
API Features
- Deep Verification of Catch-All and Anti-Spam Filter Protected Email Addresses: Bouncer can verify sophisticated email setups, including catch-all addresses hosted by major providers like Google and Microsoft, and those protected by anti-spam filters.
- Rich Output: The API provides detailed information about each email address, including deliverability status, toxicity flag, email provider, and whether the email is free or disposable.
- Organization Management: Users can easily manage multiple organizations, teams, and environments, and control access to credits and features, with the ability to invite an unlimited number of users.
Bouncer Email Verification API Pricing
- 1,000 credits: $8 for basic email verification needs.
- 5,000 credits: $35 for small to medium-sized email lists.
- 10,000 credits: $60 for larger email campaigns.
- 50,000 credits: $250 for extensive email verification requirements.
- 100,000 credits: $400 for high-volume email verification.
3) Bouncify

Bouncify is an email validation API service designed to improve email deliverability by validating email addresses in real-time. It offers both single and bulk email verification capabilities, ensuring that email lists are accurate and free from typos, fake registrations, and other issues.
API Features
- Real-Time Email Verification API: Validates email addresses in real-time to prevent fake registrations, collect valid emails during sign-up, and avoid email typos.
- Callback on Verification Completion: Provides callbacks upon the completion of bulk email verification, allowing for automated workflows.
- Free Signup with 100 Free Verifications: Allows users to test the service with 100 free verifications without requiring a credit card.
Bouncify Pricing
- 10K - 10000 Verifications: $19 for verifying up to 10,000 email addresses.
- 30K - 30000 Verifications: $39 for verifying up to 30,000 email addresses.
- 100K - 100000 Verifications: $99 for verifying up to 100,000 email addresses.
- 200K - 200000 Verifications: $159 for verifying up to 200,000 email addresses.
- 500K - 500000 Verifications: $279 for verifying up to 500,000 email addresses.
4) MailValidation.io Email Validation Services

MailValidation.io Email Validation Services offers a comprehensive solution for developers and marketers to ensure email addresses are valid and deliverable. The service includes an easy-to-use REST API, bulk email validation, and features like email blacklist checks, all designed to maintain a clean and accurate email database.
API Features
- Email Blacklist Check: This feature checks if the email addresses are on any blacklists, ensuring that emails are not sent to potentially harmful or spammy addresses.
- Mailbox Type Identification: Identifies the type of mailbox (e.g., free, disposable, role-based) to help users understand the nature of the email addresses in their list.
- HubSpot Email Validation: Provides specific validation services for email addresses collected through HubSpot, ensuring the quality and deliverability of emails in HubSpot campaigns.
MailValidation.io Email Validation Services Pricing
- Lite: Up to 1,999 emails per month at $0.005 per email, costing $10 monthly. Includes access to all features.
- Starter: Up to 9,999 emails per month at $0.0045 per email, costing $45 monthly. Includes access to all features.
- Professional: Up to 19,999 emails per month at $0.004 per email, costing $80 monthly. Includes access to all features.
- Business: Up to 100,000 emails per month at $0.0033 per email, costing $330 monthly. Includes access to all features.
- Enterprise: Volume plans available up to 20 million emails per month. Pricing is to be determined and includes access to all features.
5) Postcoder Email address validation

Postcoder Email address validation ensures that email addresses entered into forms are valid and deliverable. It performs live checks to verify the email address and highlights typos and disposable domains.
API Features
- Real-time Validation: Postcoder validates email addresses in real-time as they are typed into a form, ensuring immediate feedback on the validity of the email.
- Typo and Disposable Domain Detection: The service highlights typos and identifies disposable email domains to prevent incorrect or temporary email addresses from being used.
- Developer-Friendly Integration: The API is easy to integrate with existing forms and comes with sample code and comprehensive documentation to facilitate quick setup.
Postcoder Email address validation Pricing
- 500 Credits: Credits to use within 12 months, with the option to auto top-up. No contract and free technical support.
- 1,000 Credits: Credits to use within 12 months, with the option to auto top-up. No contract and free technical support.
- 2,000 Credits: Credits to use within 12 months, with the option to auto top-up. No contract and free technical support.
- 5,000 Credits: Credits to use within 12 months, with the option to auto top-up. No contract and free technical support.
- 10,000 Credits: Credits to use within 12 months, with the option to auto top-up. No contract and free technical support.
Postcoder Email address validation's pricing is not public. Contact their support for more info.
What to Consider When Selecting a MailerSend Alternative?
- Real-Time Email Verification: Ensures that email addresses are validated instantly, reducing the chances of fake registrations and improving the quality of your email list.
- Bulk Email Validation: Allows for the validation of large email lists in one go, which is essential for marketers managing extensive databases.
- Advanced Verification Checks: Detects typos, syntax errors, disposable emails, and catch-all addresses, ensuring that your email list is clean and deliverable.
- Integration Capabilities: Easy integration with existing platforms and tools, making it seamless to incorporate email validation into your current workflow.
- Pricing and Scalability: Flexible pricing plans that cater to different volumes of email validation needs, ensuring that the service can grow with your business.
Which One Should You Go With?
Each of the email validation services mentioned offers robust features and flexible pricing plans, making them suitable for various needs. Whether you prioritize real-time verification, bulk email validation, or advanced checks, any of these options can help maintain a clean and deliverable email list.
If you're looking for a reliable alternative, we recommend Abstract API. With its real-time checks, high accuracy, and easy integration, Abstract API stands out as a comprehensive solution for improving email deliverability and reducing bounce rates. Sign up today to experience the benefits firsthand.