2) ServiceObjects DOTS Email Validation

ServiceObjects DOTS Email Validation enhances email deliverability and improves open rates through rapid and secure email verification. It integrates seamlessly with web forms and business applications, providing comprehensive integrity checks and risk analysis.
API Features
- Seamless Integration with Web Forms and Business Applications: The service integrates effortlessly with web forms and business applications, ensuring a smooth and reliable experience for collecting and managing email addresses.
- Comprehensive Integrity Checks and Risk Analysis: Over 50 integrity checks and filters provide unparalleled insights into risk and deliverability, offering a deeper understanding of email data.
- Quantitative Quality Score: Provides estimates on the validity of an input email address, categorizing it as Good, Probably Good, Unknown, Probably Bad, or Bad.
ServiceObjects DOTS Email Validation Pricing
- ServiceObjects DOTS Email Validation's pricing is not public. Contact their support for more info.
3) Dev.me Mailbox Verification

Dev.me Mailbox Verification is a robust API designed to verify email addresses, ensuring emails are sent only to real customers and high-value contacts. It offers features like syntax and typo checks, MX-Records and SMTP verification, and deliverability scoring.
API Features
- Real-time SMTP Verification: Pings email addresses to test for catch-all configuration, ensuring real-time verification.
- Interactive Documentation: Allows users to try out the API's features as they go through the documentation, enhancing the learning and integration process.
- Quality Score: Provides a numeric score reflecting the quality and deliverability of each email address.
Dev.me Mailbox Verification Pricing
- Free: Includes access to all APIs with a limit of 500 requests per month and basic support.
- Essential: Offers 15,000 requests per month with technical and priority support.
- Standard: Provides 60,000 requests per month and includes technical and priority support.
- Professional: Allows up to 1,000,000 requests per month with dedicated support and advanced features.
- Enterprise or Custom Solution: Custom pricing with unlimited API requests and enhanced support options.
4) 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 non-intrusive methods.
API Features
- Fast Response Time: Lightning-fast (sub-millisecond) API response time ensures quick and efficient verification.
- Malicious Email Check: Detects abusive email domains and accounts, enhancing security and reducing spam.
- Ethical Approach: Uses reliable and safe methods for email verification, avoiding any unethical practices.
BigData Phone & Email Verification Package Pricing
- Base: Up to 1K queries per month. Free access to all APIs listed.
- Bronze: Up to 10K queries per month for $9.95 per month. Optional $9.95 per additional 10K monthly requests.
- Silver: Up to 100K queries per month for $79.9 per month. Optional $7.99 per additional 10K monthly requests.
- Gold: Up to 1M queries per month for $649 per month. Optional $6.49 per additional 10K monthly requests.
5) Breadcrumbs

Breadcrumbs offers a free email verification tool that helps users maintain data hygiene by verifying single email addresses or entire contact lists, ensuring improved deliverability and efficiency in email marketing campaigns.
API Features
- Verify Single Email: Users can input a single email address to get an instant score, ensuring the email is valid without storing the data.
- Verify Email List: Users can upload a contact list to get a health score, again without storing the data.
- Integration with HubSpot: Simplifies the process by allowing users to connect their HubSpot account and validate lists with just a few clicks.
Breadcrumbs Pricing
- Free: The tool is free to use, allowing users to verify every email in their contact list with a single click.
What to Consider When Selecting a IDfy Email Validation Alternative?
- Accuracy: Ensure the service provides highly accurate results, ideally with a success rate of 99.97% or higher.
- Integration: Look for easy integration with existing systems, including web forms and business applications, to streamline the validation process.
- Response Time: Opt for services that offer instant results, ensuring real-time verification without delays.
- Comprehensive Checks: Choose a service that performs multiple checks, such as for disposable emails, past fraudulent behavior, data breaches, and catch-all servers, to ensure thorough validation.
- Uptime and Support: Select a service with a high uptime guarantee (e.g., 99.9% or higher) and robust customer support available 24/7 to handle any issues promptly.
Which One Should You Go With?
Each of these email validation services offers unique features and benefits, making them all solid choices for ensuring the accuracy and deliverability of your email communications. However, if you're looking for a reliable and comprehensive alternative, we recommend signing up with Abstract API.
Abstract API stands out with its real-time checks, privacy compliance, and robust support, making it an excellent choice for businesses of all sizes. Explore the benefits and see how it can enhance your email validation process today.