2) Dev.me Mailbox Verification

Dev.me Mailbox Verification is a robust API designed to measure email deliverability and quality, ensuring emails are sent to real customers and high-value contacts. It offers advanced tools like syntax and typo checks, MX-Records and SMTP verification, and disposable email filtering, making it a reliable choice for businesses and developers worldwide.
API Features
- Advanced Tools: This feature includes a comprehensive set of tools for email verification such as syntax and typo checks, MX-Records and SMTP verification, catch-all detection, and filtering of free and disposable emails.
- Real-time SMTP Verification: This feature involves "pinging" each email address with a would-be email server to test its validity and catch-all configuration in real-time.
- Quality Score: The API provides a numeric score that reflects the quality and deliverability of each email address, helping businesses prioritize high-value contacts.
Dev.me Mailbox Verification Pricing
- Free: Access to all APIs with 1 request per second, 20 requests per day, and 500 requests per month. Basic support is included.
- Essential: $9 per month for access to all APIs, 2 requests per second, 500 requests per day, and 15,000 requests per month. Includes technical and priority support.
- Standard: $35 per month for access to all APIs, 5 requests per second, 2,000 requests per day, and 60,000 requests per month. Includes technical and priority support.
- Professional: $300 per month for access to all APIs, 10 requests per second, 35,000 requests per day, and 1,000,000 requests per month. Includes technical support, dedicated support, and advanced features.
- Enterprise or Custom Solution: Custom pricing for unlimited API requests, custom solutions and integrations, top security, SSO, and 2FA. Includes better support SLA, priority technical support, and a customer success manager.
3) 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, measured in sub-milliseconds.
- Malicious Email Check: Detects abusive email domains and accounts to ensure data integrity.
- Ethical Approach: Uses reliable and safe methods for email verification, avoiding unsafe practices.
BigData Phone & Email Verification Package Pricing
- Base: Free plan with up to 1K queries per month, API returns errors after quota is hit.
- Bronze: $9.95/month for up to 10K queries, optional additional queries at $9.95 per 10K, API returns errors after quota is hit unless upgraded or PAY AS YOU GO is opted.
- Silver: $79.9/month for up to 100K queries, optional additional queries at $7.99 per 10K, API returns errors after quota is hit unless upgraded or PAY AS YOU GO is opted.
- Gold: $649/month for up to 1M queries, optional additional queries at $6.49 per 10K, API returns errors after quota is hit unless upgraded or PAY AS YOU GO is opted.
- BigData Phone & Email Verification Package's pricing is not public. Contact their support for more info.
4) Breadcrumbs

Breadcrumbs offers a free email verification tool designed to help users maintain clean and efficient email lists by verifying the deliverability of email addresses.
API Features
- Free Email Verification Tool: Allows users to verify email addresses for free to ensure they are valid and deliverable.
- No Data Storage: Ensures user privacy by not storing any provided email data.
- Integration with HubSpot: Simplifies the process by allowing users to connect their HubSpot account and verify lists with up to 10,000 contacts in just a few clicks.
Breadcrumbs Pricing
- Free: Verify email addresses for free to ensure they are valid and deliverable.
- Integration with HubSpot: Connect your HubSpot account and verify lists with up to 10,000 contacts in just a few clicks.
- Breadcrumbs's pricing is not public. Contact their support for more info.
5) Informatica Email Verification

Informatica Email Verification is a service that validates email addresses in real-time, ensuring they are accurate and safe. It uses a unique proprietary verification process that checks the validity of email addresses directly with the domain, identifying and eliminating malicious threats to improve email deliverability and sender reputation.
API Features
- Direct Domain Validation: Unlike other vendors, Informatica does not rely on stale databases but validates email addresses directly with the domain, ensuring the most accurate results.
- Proprietary, Self-Learning Algorithms: The service uses advanced algorithms to detect and eliminate malicious threats, providing a higher level of security and reliability.
- Flexible Integration: The service can be easily integrated with existing platforms like Marketo, Salesforce, or Bronto, ensuring seamless operation and real-time results.
Informatica Email Verification Pricing
- Free: Verify email addresses for free to ensure they are valid and deliverable.
- Integration with HubSpot: Connect your HubSpot account and verify lists with up to 10,000 contacts in just a few clicks.
- Informatica Email Verification's pricing is not public. Contact their support for more info.
What to Consider When Selecting a ServiceObjects DOTS Email Validation Alternative?
- Accuracy and Reliability: Ensure the service provides accurate and reliable validation results, including real-time MX & SMTP checks and typo detection.
- Compliance: Verify that the tool complies with privacy regulations like GDPR and CCPA to protect user data and maintain legal standards.
- Integration Capabilities: The service should easily integrate with existing systems and platforms, such as web forms, CRM, and marketing automation tools.
- Speed and Scalability: Look for fast response times and the ability to handle varying volumes of requests, from small to large scale, to meet your business needs.
- Support and Documentation: Availability of comprehensive documentation, SDKs, and customer support to facilitate easy implementation and resolve technical issues promptly.
Which One Should You Go With?
Each of the email verification services discussed offers unique features and benefits, making them all viable options depending on your specific needs. Whether you prioritize speed, integration capabilities, or advanced security features, there's a solution that fits your requirements.
If you're looking for a robust alternative, we recommend signing up with Abstract API. It combines real-time validation, privacy compliance, and scalability, ensuring your email lists are clean and deliverable. Explore Abstract API today to enhance your email verification process.