2) Cloudmersive Full Email Address Validation and Verification

Cloudmersive Full Email Address Validation and Verification offers real-time, on-demand email verification with high performance, suitable for user experience applications like signup and checkout flows. It supports multi-factor validation, including syntax, DNS, and server-level email verification, ensuring high-quality email validation results.
API Features
- Real-time Email Verification: Provides instant, on-demand email verification suitable for user experience applications like signup and checkout flows.
- 360-degree Email Verification: Utilizes multi-factor validation including syntax, DNS, and server-level email verification to ensure high-quality results.
- Flexible Deployment: Supports deployment in various environments including public cloud, managed instance, private cloud, and government cloud to meet different latency, compliance, security, and control needs.
Cloudmersive Full Email Address Validation and Verification Pricing
- Small Business Plans: Suitable for businesses with fewer than 50 employees. Basic security capabilities and multi-tenant cloud deployment.
- Medium Business Plans: Suitable for businesses with up to 250 employees. Offers multi-tenant and single-tenant cloud deployment, on-premises options, advanced security capabilities, and SLA agreements.
- Enterprise Plans: Suitable for businesses with unlimited employees. Includes multi-tenant and single-tenant cloud deployment, on-premises options, advanced security capabilities, SLA agreements, and enhanced support and customer success.
- Government Plans: Suitable for government entities with unlimited employees. Features government cloud deployment, on-premises options, advanced security capabilities, SLA agreements, and enhanced support and customer success.
3) Maileroo

Maileroo is a privacy-friendly email validation service that offers a Free Email Verification API, ensuring only real, high-value users are added to your database by verifying and validating email addresses in real-time.
API Features
- Real-time MX Check: The API verifies email addresses instantly by checking the DNS records of the email's domain to ensure they exist and can receive emails.
- Safe and Secure: Maileroo prioritizes user data privacy by not storing or sharing data with third parties and using industry-standard security practices.
- Temporary Email Detection: The API identifies and filters out temporary and disposable email addresses to maintain a clean and abuse-free platform.
Maileroo Pricing
- Free Plan: Send up to 3,000 emails per month at no cost. No credit card required.
- Email API Plans: Various tiers based on the number of emails sent per month, including outbound and inbound emails.
- Email Marketing Plans: Plans based on the number of contacts, each including a specific number of automations and email quantities.
- Custom Plans: Tailored plans based on specific requirements. Requires contacting the support team for details.
4) Accurate Append Email Validation and Verification API

Accurate Append Email Validation and Verification API helps businesses maintain a high-quality email database by ensuring email addresses are valid, properly formatted, and deliverable, thereby reducing bounce-backs and enhancing sender reputation.
API Features
- Real-time Validation: Ensures email addresses are validated instantly, reducing bounce rates and improving inboxing rates.
- Triple-Scrub Process: Utilizes multiple layers of verification to remove invalid or outdated email addresses, enhancing the quality of the email database.
- Custom Solutions: Offers tailored data solutions to meet the unique needs of different businesses, ensuring seamless API integration.
Accurate Append Email Validation and Verification API Pricing
- Basic Plan: Includes essential email validation features suitable for small businesses looking to maintain a clean email list.
- Standard Plan: Offers advanced validation options, including syntax and domain checks, ideal for medium-sized enterprises.
- Premium Plan: Provides comprehensive validation services with additional support and custom solutions for large organizations.
- Enterprise Plan: Tailored for large-scale operations, this plan includes all features and dedicated account management.
- Custom Plan: Designed to meet specific business needs, requiring direct contact with support for detailed pricing.
5) Amazon Email Address & Phone Number Validation API

Amazon Email Address & Phone Number Validation API ensures the accuracy of email addresses and phone numbers with reliable, real-time validation, helping businesses maintain high-quality contact information.
API Features
- Real-Time Validation: The API allows for the real-time validation of email addresses and phone numbers from around the world, ensuring accurate and up-to-date contact information.
- Bypass AWS Port 25 Blocking: The email address validation feature bypasses AWS port 25 (SMTP) blocking by providing an easy-to-use API endpoint, allowing users to verify email validity without being affected by AWS's port 25 restrictions.
- Additional Metadata for Phone Numbers: The phone validation API not only verifies the validity of phone numbers but also provides additional useful metadata such as area description, phone carrier, and time zone, if available.
Amazon Email Address & Phone Number Validation API Pricing
- Pay-As-You-Go Plan: No upfront costs or commitments. Charges are based on the number of requests sent to the API and integrated with AWS monthly billing.
What to Consider When Selecting a APILayer Email Verification API Alternative?
- Real-time Validation: Ensures email addresses are validated instantly, reducing bounce rates and improving inboxing rates.
- Privacy Compliance: Adheres to privacy regulations like GDPR and CCPA, ensuring user data is handled securely and ethically.
- Scalability: Capable of handling large volumes of email verifications, making it suitable for businesses of all sizes.
- Comprehensive Checks: Includes multiple layers of verification such as syntax, DNS, and SMTP checks to ensure high accuracy.
- Flexible Deployment Options: Offers various deployment environments including public cloud, private cloud, and on-premises to meet different security and compliance needs.
Which One Should You Go With?
Each of the email validation APIs discussed offers unique features and benefits, making any of them a solid choice for businesses looking to maintain a high-quality email database. Whether you prioritize real-time validation, privacy compliance, or scalability, there's an option that will meet your needs.
If you're looking for a reliable alternative, we recommend signing up with Abstract API. With its robust features, privacy compliance, and excellent support, Abstract API stands out as a top choice for businesses of all sizes. Sign up today to experience the benefits firsthand.