What is Mailboxlayer?

Mailboxlayer offers a powerful email validation and verification API designed to ensure the existence, validity, and quality of email addresses. With advanced tools such as syntax and typo checking, MX-Records and SMTP verification, and domain categorization, organizations can prevent fraudulent users and keep databases clean by filtering out disposable, free, and low-quality addresses. The platform delivers responses in lightweight JSON format and secures all data exchanges with 256-bit HTTPS encryption.

Users have access to real-time analytics, extended usage statistics, and interactive documentation for effortless integration. By leveraging a daily-updated email provider database and a numerical deliverability score, businesses and developers can maintain high-value contact lists, improve email campaign effectiveness, and reduce operational inefficiencies caused by undelivered emails. Flexible subscription plans, API marketplace integration, and world-class technical support are also included for optimal experience.

Features

Real-time Email Verification: Instantly validate the legitimacy and deliverability of email addresses.
Syntax and Typo Check: Detect errors and provide suggested corrections for common mistakes.
MX-Records and SMTP Verification: Ensure domain and mailbox existence with comprehensive server checks.
Catch-all Detection: Identify whether the mail server accepts all emails for a domain.
Disposable and Free Email Filtering: Separate addresses from temporary or publicly available providers.
Role-based Address Identification: Distinguish emails associated with functions or departments.
Email Quality Scoring: Assign a numeric score to assess deliverability and risk.
Secure Data Transmission: 256-bit HTTPS encryption for all API requests.
Easy Integration: Simple REST API with JSON responses and extensive documentation.
Usage Analytics: Track API usage with daily and monthly reports plus notification system.

Use Cases

Validating customer email addresses during signup or registration processes.
Filtering mailing lists to reduce bounce rates before large email campaigns.
Preventing fraudulent or temporary email addresses from entering business systems.
Maintaining high-quality contact databases for targeted marketing efforts.
Integrating into SaaS platforms for real-time user email verification.
Enhancing CRM or marketing automation tools with accurate email data.
Screening e-commerce orders for fake or invalid customer emails.
Improving transactional email deliverability and reputation.

FAQs

How accurate is the SMTP check provided by Mailboxlayer?

The SMTP check is generally reliable in verifying whether an email address actually exists, though certain mail servers may behave unpredictably and slightly affect accuracy. Combining SMTP checks with other validation tools increases effectiveness.
What is the difference between free and paid subscription plans?

The Free Plan offers up to 100 API requests per month without a time limit, while paid plans provide higher request volumes, secure HTTPS integration, priority support, and advanced API functionalities.
Is Mailboxlayer secure for handling sensitive data?

Yes, paid customers benefit from 256-bit HTTPS encryption to secure all API data transmissions and prevent unauthorized access.
What happens if I exceed my API request volume?

Notifications are sent via email and dashboard when approaching request limits. After exceeding the allowance, overage fees apply to ensure continued service without disruption.
Can I filter out disposable or role-based email addresses?

Yes, Mailboxlayer allows filtering of disposable or publicly visible addresses and identifies role-based emails, reducing fraudulent and non-personal signups in your system.