2) Kickbox

Kickbox offers an Email Verification API that helps prevent fake and mistyped signups, ensuring a clean email database. It operates on a cost-effective, pay-as-you-go basis and guarantees 95% accuracy.
API Features
- Real-Time Email Verification: This feature allows users to verify email addresses instantly as they are entered, preventing fake and mistyped emails from entering the database.
- Batch Verification: Users can verify large lists of email addresses efficiently, reducing bounces and improving deliverability.
- Verification Dashboard: Provides real-time monitoring and visualization of email verification results, helping users maintain data integrity.
Kickbox Pricing
- 100 Verifications: Free of charge, allowing users to test the service without any cost.
- 500 Verifications: Costs $5, suitable for small-scale email verification needs.
- 1,000 Verifications: Costs $10, ideal for moderate email verification requirements.
- 2,500 Verifications: Costs $25, designed for larger email lists.
- 5,000 Verifications: Costs $40, for extensive email verification tasks.
3) DeBounce

DeBounce provides a comprehensive API for real-time and bulk email validation, offering end-to-end services such as detecting bounces, verifying syntax, and filtering out disposable and spam-trap addresses.
API Features
- Email Avatar: Provides an avatar URL associated with any email address, sourced from multiple online resources.
- Spelling Suggestion: Offers "Do You Mean" suggestions for misspelled emails, correcting major email provider domains.
- Spam Traps: Filters email addresses against a database of known spam-traps and honeypots, which is constantly updated.
DeBounce Pricing
- 5,000 Verifications: $10, costing $0.002 per verification.
- 10,000 Verifications: $15, costing $0.0015 per verification.
- 25,000 Verifications: $30, costing $0.0012 per verification.
- 50,000 Verifications: $50, costing $0.001 per verification.
- 100,000 Verifications: $90, costing $0.0009 per verification.
4) Mailboxlayer

Mailboxlayer is a simple REST API that provides email validation and verification, checking the existence, validity, and quality of email addresses. It offers features like syntax and typo checks, MX-Records and SMTP verification, catch-all detection, and filtering of free and disposable email providers.
API Features
- Syntax & Typo Check: Validates the syntax of email addresses and provides suggestions for common typos.
- MX-Records & SMTP Verification: Confirms the existence of the email domain and tests the email address for deliverability.
- Catch-All Detection: Identifies domains that accept all emails, helping to filter out potentially invalid addresses.
Mailboxlayer Pricing
- 5,000 Verifications: Costs $10, suitable for small-scale email verification needs.
- 10,000 Verifications: Costs $15, ideal for moderate email verification requirements.
- 25,000 Verifications: Costs $30, designed for larger email lists.
- 50,000 Verifications: Costs $50, for extensive email verification tasks.
- 100,000 Verifications: Costs $90, for very large email verification needs.
5) Verifalia

Verifalia offers an email verification API that ensures email addresses in your database are valid and deliverable, helping maintain the hygiene of email data crucial for marketing, sales, and customer service.
API Features
- Real-time Email Verification: Integrates seamlessly into various platforms to prevent invalid emails from entering your system at the point of sign-up.
- Batch Email Validation: Allows for the efficient validation of large email lists, ensuring your database remains clean and up-to-date.
- Free and Open Source SDKs: Provides SDKs for multiple programming languages, simplifying the integration process for developers.
Verifalia Pricing
- Pay-as-You-Go Credit Packs: Credits never expire and can be used at any time for one-time email list cleaning. Each credit equals one standard email verification.
- Ultimate: Offers 25,000 daily free credits, unlimited additional verifications, best effort processing speed, and a custom classification scheme with 100 classification overrides.
- Enterprise: Includes 6,250 daily free credits, unlimited additional verifications, best effort processing speed, and a custom classification scheme with 50 classification overrides.
- Professional: Provides 1,250 daily free credits, unlimited additional verifications, best effort processing speed, and a custom classification scheme with 10 classification overrides.
- Starter: Comes with 250 daily free credits, unlimited additional verifications, best effort processing speed, and a custom classification scheme with 5 classification overrides.
What to Consider When Selecting a Emailable Alternative?
- Real-Time Verification: Ensures email addresses are validated instantly as they are entered, preventing fake and mistyped emails from entering your database.
- Batch Verification: Allows for the efficient validation of large email lists, ensuring your database remains clean and up-to-date.
- Syntax and Typo Checks: Validates the syntax of email addresses and provides suggestions for common typos, improving the accuracy of your email list.
- Disposable and Free Email Detection: Filters out disposable and free email providers, helping to maintain the quality of your email database.
- Integration Capabilities: Offers extensive integration options with various platforms and tools, making it easier to incorporate the email verification service into your existing systems.
Which One Should You Go With?
Each of the email verification services discussed offers unique features and pricing plans, making them all viable options depending on your specific needs. Whether you prioritize real-time verification, batch processing, or advanced typo and syntax checks, 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 comprehensive features, privacy compliance, and reliable performance, Abstract API stands out as a top choice for maintaining a clean and effective email database.