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March 10, 2025

Top 5 Mailboxlayer Alternatives in 2025

Nicolas Rios

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Mailboxlayer is an email validation and verification JSON API for developers. While it offers a range of features, it might not be the ideal solution for everyone.

This article will explore five alternatives to Mailboxlayer, providing options that may better suit different needs and preferences. Whether you're looking for different features, pricing, or integration capabilities, these alternatives offer a variety of choices to consider.

Best Alternatives to Mailboxlayer in 2025

1) Abstract API

Abstract API

At Abstract API, we offer a comprehensive Email Validation and Verification API designed to enhance email delivery rates and maintain clean email lists. Our API performs real-time MX & SMTP checks, detects typos, and identifies disposable email addresses, ensuring compliance with privacy regulations like GDPR and CCPA. With global coverage, scalability, and reliable performance, our API integrates seamlessly with various tools and platforms, making it an ideal choice for developers and enterprises alike.

API Features

  • Real-time MX & SMTP check: Our API performs real-time checks on mail exchange and SMTP servers to ensure email deliverability.
  • Typo checking and smart suggestion: Detects common typos in email addresses and provides smart suggestions for corrections.
  • Disposable and free email providers check: Identifies and flags email addresses from disposable and free email providers to maintain list quality.
  • Privacy friendly: Complies with GDPR and CCPA regulations to ensure user data privacy and security.
  • Industry-leading risk & quality score: Assigns a risk and quality score to each email address to help you assess its validity.
  • Smart learning at scale: Utilizes machine learning to improve accuracy and adapt to new email patterns over time.
  • Toxic domain detection: Detects and flags email addresses from known toxic domains to prevent spam and abuse.
  • Role detection: Identifies role-based email addresses (e.g., admin@, support@) to help you manage your email lists more effectively.

These are just a few of Abstract API's many features. Check them out here to learn more.

Abstract API Pricing

  • Starter Plan - $19/month: Includes 10,000 API calls per month, 3 requests per second, and domain whitelisting.
  • Basic Plan - $39/month: Offers 25,000 API calls per month, 5 requests per second, and domain whitelisting.
  • Standard Plan - $69/month: Provides 50,000 API calls per month, 10 requests per second, domain whitelisting, and multiple API keys.
  • Business Plan - $99/month: Features 100,000 API calls per month, 25 requests per second, domain whitelisting, and multiple API keys.
  • Professional Plan - $199/month: Grants 250,000 API calls per month, 50 requests per second, domain whitelisting, and multiple API keys.
  • Growth Plan - $499/month: Delivers 750,000 API calls per month, 100 requests per second, domain whitelisting, and multiple API keys.

If you would like a plan based on your specific needs, contact us for a custom solution.

What Are Users Saying?

Users consistently praise Abstract API for its reliability and ease of use. Here are some of the positive comments from our satisfied customers:

  • "Accurate email verification, I tested a different amount of times." - Isa M.
  • "It gives quality score and deliverability of the email which reduces bounce rate for my emails." - Verified User in Retail

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2) Verifalia

Verifalia

Verifalia offers an email verification API that ensures email addresses are valid and deliverable, helping businesses maintain clean email lists and improve sender reputation.

API Features

  • Real-time email verification: Integrates seamlessly with various platforms to prevent invalid emails at sign-up and safeguard premium content.
  • Batch email validation: Allows users to upload and validate email lists on a rolling schedule, ensuring data remains fresh and accurate.
  • Secure API: Utilizes HTTPS/SSL connections for secure data transmission, ensuring the protection of sensitive information.

Verifalia Pricing

  • Pay-as-You-Go Credit Packs: Ideal for one-time email list cleaning. Credits never expire and can be used anytime.
  • Ultimate: Offers 25,000 daily free credits, unlimited additional verifications, and priority support.
  • Enterprise: Provides 6,250 daily free credits, unlimited additional verifications, and priority support.
  • Professional: Includes 1,250 daily free credits, unlimited additional verifications, and priority support.
  • Starter: Comes with 250 daily free credits, unlimited additional verifications, and regular support.

3) WhoisXMLAPI Email Verification API

WhoisXMLAPI Email Verification API

WhoisXMLAPI Email Verification API performs comprehensive validation of email addresses in real-time, verifying new user registrations, reducing email bouncing, and blocking spam. It checks the syntax, branded status, disposability, mail server existence, mailbox existence, and catch-all status of email addresses to improve email marketing campaigns and ensure valid user sign-ups.

API Features

  • Syntax Validation: Ensures the email address conforms to IETF standards using a complete syntactic email validation engine.
  • Branded Email Check: Determines if the email address is custom and linked to a business email account or if it is generic from a free email service.
  • Disposable Email Check: Identifies if the email address is from a known disposable email provider such as Mailinator, 10MinuteMail, GuerrillaMail, and over 2,000 others.

WhoisXMLAPI Email Verification API Pricing

  • Basic: Offers 5,000 email verifications per month with standard support.
  • Standard: Provides 20,000 email verifications per month and includes priority support.
  • Professional: Includes 50,000 email verifications per month with premium support and additional features.
  • Enterprise: Allows for 100,000 email verifications per month, with dedicated account management and custom features.
  • Custom: Tailored plans for businesses with specific needs, requiring direct contact with support for pricing details.

4) BytePlant Real Time Email Validation

BytePlant Real Time Email Validation

BytePlant Real Time Email Validation checks the quality of email addresses at the point of entry, automatically detecting if an email address is valid and eliminating disposable, fake, and mistyped addresses.

API Features

  • End-to-End Deliverability Check: Ensures that the email address can receive emails by performing a comprehensive validation process.
  • Misspelled Domain Detection: Detects common typos in domain names to prevent issues related to typosquatting.
  • Greylisting Detection: Detects if the email server uses greylisting, which temporarily rejects emails from unknown senders to prevent spam.

BytePlant Real Time Email Validation Pricing

  • Pay-as-You-Go: Purchase credits as needed without a subscription. Ideal for occasional use.
  • Monthly Subscription: Offers a set number of email validations per month. Suitable for regular users.
  • Enterprise Plan: Customizable plan for large-scale email validation needs. Includes dedicated support.
  • Free Trial: Limited number of email validations available for testing the service.
  • Custom Plan: Tailored solutions based on specific business requirements. Contact support for details.

5) Hunter Email Verifier API

Hunter Email Verifier API

Hunter Email Verifier API leverages a renowned email verification algorithm to verify and validate email addresses, providing a confidence score and additional metadata for each address checked.

API Features

  • Confidence Score and Metadata: Provides a confidence score and additional metadata about the email address, such as its validity, whether it is disposable, and more.
  • Fast Response Times and High Uptime: Ensures seamless support for tools with quick response times and nearly 100% uptime.
  • Free Access: Available for use without requiring a premium Hunter plan.

Hunter Email Verifier API Pricing

  • Free: $0 per month. Includes 25 monthly searches, 50 monthly verifications, and 1 connected email account with regular support.
  • Starter: $49 per month (or $34 per month if paid yearly). Offers 500 monthly searches, 1,000 monthly verifications, and 3 connected email accounts with priority support.
  • Growth: $149 per month (or $104 per month if paid yearly). Provides 5,000 monthly searches, 10,000 monthly verifications, and 10 connected email accounts with priority support.
  • Scale: $299 per month (or $209 per month if paid yearly). Includes 10,000 monthly searches, 10,000 monthly verifications, and 20 connected email accounts with priority support.
  • Enterprise: Custom pricing. Features a dedicated account manager, higher rate limit, on-demand quotas, and flexible quotas.

What to Consider When Selecting a Mailboxlayer Alternative?

  1. Real-time Verification: Ensures email addresses are validated instantly, preventing invalid emails from entering your system and improving data quality.
  2. Batch Processing: Allows for the validation of large email lists in bulk, which is essential for maintaining clean and up-to-date email databases.
  3. Integration Capabilities: Seamlessly integrates with various platforms and applications, making it easier to incorporate email validation into existing workflows.
  4. Data Security and Compliance: Adheres to data protection regulations like GDPR and CCPA, ensuring that user data is handled securely and legally.
  5. Comprehensive Validation Checks: Includes multiple layers of validation such as syntax check, MX record check, SMTP verification, and disposable email detection to ensure the highest accuracy.

Which One Should You Go With?

Each of the email verification APIs discussed offers robust features and reliable performance, making any of them a solid choice for maintaining clean and accurate email lists. However, if you're looking for an alternative that combines comprehensive validation checks, ease of integration, and exceptional support, we recommend Abstract API.

With its real-time MX & SMTP checks, typo detection, and compliance with major privacy regulations, Abstract API stands out as a versatile and user-friendly option. Sign up today to experience the benefits of a top-tier email verification service that prioritizes both accuracy and user satisfaction.

Nicolas Rios

Head of Product at Abstract API

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