2) IDfy Email Validation

IDfy Email Validation is an API designed to validate email addresses during user sign-up processes, helping to prevent fraud, automate workflows, and speed up onboarding.
API Features
- Disposable Email Detection: Identifies and flags disposable email addresses to prevent temporary or fake accounts from being created.
- Historical Fraud Association: Checks if the email address has been previously associated with fraudulent activities, enhancing security measures.
- Data Breach History: Verifies if the email address has been involved in any known data breaches, providing an additional layer of risk assessment.
IDfy Email Validation Pricing
Free Trial: Users can enter their email ID to get access to a free trial of the service.
Talk to Sales: Detailed pricing information likely requires contacting their sales team for a customized quote.
IDfy Email Validation's pricing is not public. Contact their support for more info.
3) ServiceObjects DOTS Email Validation

ServiceObjects DOTS Email Validation enhances email deliverability and improves open rates through rapid and secure email verification, integrating seamlessly with web forms and business applications.
API Features
- Comprehensive Integrity Checks and Risk Analysis: Performs over 50 integrity checks and filters to provide deep insights into the risk and deliverability of email addresses.
- Quantitative Quality Score: Provides a quality score for each email address, categorizing it as Good, Probably Good, Unknown, Probably Bad, or Bad.
- 99.999% Uptime Guarantee: Ensures the service is always available when needed, providing reliability and peace of mind.
ServiceObjects DOTS Email Validation Pricing
- Free Trial: Users can sign up for a free trial to test the service's capabilities.
- Basic Plan: Includes essential email validation features suitable for small businesses or individual use.
- Standard Plan: Offers more comprehensive validation and risk analysis, ideal for medium-sized businesses.
- Enterprise Plan: Provides advanced features and higher usage limits, designed for large organizations with extensive email validation needs.
- Custom Plan: Tailored solutions based on specific requirements, likely requiring direct contact with the sales team.
4) Dev.me Mailbox Verification

Dev.me Mailbox Verification is a simple REST API that measures email deliverability and quality, helping businesses verify the existence, validity, and quality of email addresses. It includes advanced tools such as syntax and typo checks, MX-Records and SMTP verification, catch-all detection, and deliverability scoring.
API Features
- Full Verification: This feature allows users to verify email addresses as they come into their system, ensuring that emails are only sent to real customers and high-value contacts.
- Advanced Tools: The API includes a suite of advanced tools such as syntax and typo checks, MX-Records and SMTP verification, catch-all detection, free and disposable email filtering, and deliverability scoring.
- Real-time SMTP Verification: This feature involves "pinging" each email address with a would-be email server to test for catch-all configuration and verify the existence of the email address in real-time.
Dev.me Mailbox Verification Pricing
Free: Offers 1 request per second, 20 requests per day, and 500 requests per month with basic support.
Essential: Priced at $9 per month, includes 2 requests per second, 500 requests per day, and 15,000 requests per month with technical and priority support.
Standard: Costs $35 per month, providing 5 requests per second, 2,000 requests per day, and 60,000 requests per month with technical and priority support.
Professional: Available for $300 per month, includes 10 requests per second, 35,000 requests per day, and 1,000,000 requests per month with dedicated support and advanced features.
Enterprise or Custom Solution: Pricing is custom and requires contacting support for a quote. Offers unlimited API requests, priority technical support, and a customer success manager.
5) BigData Phone & Email Verification Package

BigData Phone & Email Verification Package offers global verification of phone numbers and email addresses, ensuring data accuracy and integrity through various checks and validations.
API Features
- Fast Response Time: The API offers lightning-fast response times, operating in sub-millisecond speeds.
- Malicious Email Check: Detects abusive email domains and accounts.
- Ethical Approach: Uses reliable and safe methods for verifying email addresses without resorting to unethical practices.
BigData Phone & Email Verification Package Pricing
- Base: Free plan offering up to 1,000 queries per month. API returns errors after the quota is hit unless upgraded.
- Bronze: Costs $9.95 per month for up to 10,000 queries. Optional $9.95 per additional 10,000 requests, with a PAY AS YOU GO option available.
- Silver: Priced at $79.9 per month, includes up to 100,000 queries. Optional $7.99 per additional 10,000 requests, with a PAY AS YOU GO option available.
- Gold: Available for $649 per month, provides up to 1,000,000 queries. Optional $6.49 per additional 10,000 requests, with a PAY AS YOU GO option available.
What to Consider When Selecting a AtData SafeToSend Alternative?
- Real-Time Verification: Ensures that email addresses are validated instantly, improving the accuracy and efficiency of your email campaigns.
- Comprehensive Integrity Checks: Includes syntax validation, domain checks, and SMTP verification to ensure the email address is valid and deliverable.
- Disposable and Free Email Detection: Identifies and filters out temporary or free email addresses, reducing the risk of low-quality leads.
- Spam Trap and Malicious Email Detection: Detects and flags email addresses associated with spam traps or malicious activities, protecting your sender reputation.
- Integration Capabilities: Seamlessly integrates with your existing marketing platforms and workflows, ensuring a smooth and efficient validation process.
Which One Should You Go With?
Each of the email validation services discussed offers unique features and benefits, making them suitable for various business needs. Whether you prioritize real-time verification, comprehensive integrity checks, or seamless integration capabilities, there's a solution that fits your requirements.
If you're looking for a reliable alternative, we recommend signing up with Abstract API. With its industry-leading risk and quality scores, real-time checks, and privacy compliance, Abstract API stands out as a robust choice for ensuring the accuracy and integrity of your email data.