2) Hunter Email Verifier API

The Hunter Email Verifier API is a programmatic solution designed to verify the validity of email addresses. It provides a confidence score and additional metadata, making it a reliable tool for ensuring email accuracy in various workflows.
API Features
- Confidence Score and Metadata: The API response includes a confidence score and additional metadata to provide detailed information about the validity of an email address.
- Free for Everyone: The API is accessible to all users without requiring a premium Hunter plan.
- Fast and Robust: The API offers fast response times and near 100% uptime, ensuring seamless support for various tools and applications.
Hunter Email Verifier API Pricing
- Free: $0 per month. Includes 25 monthly searches, 50 monthly verifications, and 1 connected email account.
- Starter: $49 per month (or $34 per month if paid yearly). Offers 500 monthly searches, 1,000 monthly verifications, 3 connected email accounts, and priority support.
- Growth: $149 per month (or $104 per month if paid yearly). Provides 5,000 monthly searches, 10,000 monthly verifications, 10 connected email accounts, and priority support.
- Scale: $299 per month (or $209 per month if paid yearly). Includes 10,000 monthly searches, 10,000 monthly verifications, 20 connected email accounts, and priority support.
- Enterprise: Custom pricing. Features a dedicated account manager, higher rate limit, on-demand quotas, and flexible quotas.
3) Clearout Email Verification & Validation API

The Clearout Email Verification & Validation API offers real-time email verification to maintain list hygiene, prevent invalid and spam email addresses, and ensure clean and high-quality data.
API Features
- Mailbox Error Verification: Verifies all kinds of mailbox errors without sending any payload to the given email address.
- Extended SMTP Validation: Verifies SMTP providers for every email address to determine the active mail servers.
- SpamTrap Detection: Uses a multi-layered algorithm to determine the chances of an email address being a spam trap.
Clearout Email Verification & Validation API Pricing
- Annual Subscription: Pay once a year. Credits are automatically added to your account for uninterrupted access, offering up to a 20% discount.
- Monthly Subscription: Pay monthly. Receive credits automatically to keep your account active without interruption, offering up to a 10% discount.
- One Time/Pay-As-You-Go: Make a one-time payment. Instantly add credits to your account whenever needed.
- Custom Subscription Plans: Tailored to specific user needs. Requires contacting support for details.
- General Benefits: Credits never expire. 24/7 support with experts, fully GDPR compliant, and ISO & SOC 2 Type II certified.
4) IPQS Email Address Verification

IPQS Email Address Verification can validate email addresses and identify high-risk emails in real-time, ensuring over 99% accuracy through proprietary tests and extensive data collection. It performs hundreds of syntax and DNS checks to determine if an email address exists with the mail service provider, reducing fraudulent activity from fake or duplicate accounts and mitigating fraudulent transactions.
API Features
- Email Risk Scoring: Provides real-time scoring of email addresses to identify high-risk and abusive users, helping to prevent fraudulent activities such as fake account creation and credit card fraud.
- Bulk Email Validation & List Cleaning: Allows users to upload CSV files for bulk email verification, quickly filtering out invalid, spam trap, and high-risk email addresses to improve sender reputation and email deliverability.
- Detection of Disposable and Abusive Email Addresses: Identifies temporary and disposable email addresses used by fraudsters, helping to block such emails and prevent abusive behavior on the user's site.
IPQS Email Address Verification Pricing
- Free: Includes 5,000 email verification lookups per month, syntax checks, and DNS checks.
- Pay-As-You-Go: Allows users to purchase credits as needed for email verification without a subscription.
- Monthly Subscription: Offers a set number of email verifications per month with automatic credit renewal.
- Annual Subscription: Provides a yearly plan with a discount compared to monthly payments, including a set number of verifications.
- Enterprise: Custom pricing with higher rate limits and additional features, requiring contact with support for details.
5) EmailValidation

EmailValidation offers a fast, stable, and easy-to-integrate API for real-time email validation, ensuring the accuracy and validity of email addresses with clear JSON responses.
API Features
- Real-time Email Validation Playground: Users can validate any email address in real-time using the playground feature on the webpage, providing immediate feedback on various aspects of the email address.
- Clear Data Structure with JSON Responses: The API endpoints provide easy-to-read JSON responses, designed for long-term support and future data enhancements without breaking existing integrations.
- Wide Variety of Use Cases: The API is versatile and can be used for various purposes, encouraging users to discuss their specific needs to tailor the API accordingly.
EmailValidation Pricing
- Free: Offers 100 credits per month with basic features like email validation, email finder, and bulk processing.
- Small: Costs $9.99 per month and includes 5,000 credits, along with unlimited concurrent API requests and team management.
- Medium: Priced at $34.99 per month, this plan provides 25,000 credits and additional API keys for enhanced functionality.
- Large: Available for $94.99 per month, offering 100,000 credits and up to 5 API keys for extensive usage.
- Custom Plan: Tailored solutions for specific business needs. Contact support for a custom plan.
What to Consider When Selecting a BytePlant Real Time Email Validation Alternative?
- Accuracy and Reliability: Ensure the service provides high accuracy in detecting invalid, disposable, and spam email addresses, as well as real-time validation to maintain data quality.
- Integration and Ease of Use: Look for APIs that offer easy integration with various platforms and programming languages, along with comprehensive documentation and support.
- Compliance and Security: Verify that the service complies with privacy regulations like GDPR and CCPA, and offers robust security measures to protect user data.
- Scalability and Performance: Choose a service that can handle large volumes of email verifications efficiently, with fast response times and high availability.
- Pricing and Flexibility: Consider the cost-effectiveness of the service, including free trials, pay-as-you-go options, and custom plans to suit different business needs.
Which One Should You Go With?
Each of the email validation services discussed offers unique features and pricing plans, making them suitable for various needs and budgets. Whether you prioritize accuracy, ease of integration, or compliance, 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 real-time checks, privacy compliance, and excellent support, Abstract API stands out as a reliable choice for maintaining email list hygiene and ensuring data quality.