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Overview
WhoisXML API Email Verification API delivers real-time checks that reduce bounce rates and flag risky email submissions. Some results rely on external mail server responses, which can vary. Even so, it provides consistent validation signals and suits teams managing large email volumes across compliance, marketing, and security workflows.
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Starting Price
Custom
WhoisXML API Email Verification API Specifications
Security & Compliance
Integration with Other Tools
Real-Time Communication
File Sharing & Management
What Is WhoisXML API Email Verification API?
WhoisXML API Email Verification API is a REST‑based service that checks the validity and quality of email addresses by applying multiple verification checks such as syntax validation, domain mail server existence, and mailbox reachability via Simple Mail Transfer Protocol (SMTP) responses. It integrates with applications through API calls and client libraries for several languages. It serves developers, security teams, and operations teams that need to ensure contact lists are clean, and that user‑submitted emails are valid.
WhoisXML API Email Verification API Pricing
The software offers a free tier that includes 100 queries, allowing teams to test the API before upgrading. Paid monthly subscription plans begin at $54.00/month for 10,000 Queries and scale based on query volume. The available pricing tiers are outlined below.
One-time purchase:
- 10,000 Queries – $89.00
- 50,000 Queries – $279.00
- 100,000 Queries – $479.00
- 250,000 Queries – $979.00
- 500,000 Queries – $1,599.00
- Custom Plan – Custom pricing
Monthly subscription:
- 10,000 Queries – $54.00/month
- 50,000 Queries – $174.00/month
- 100,000 Queries – $294.00/month
- 250,000 Queries – $594.00/month
- 500,000 Queries – $984.00/month
- Custom Plan – Custom pricing
Disclaimer: The pricing is subject to change.
WhoisXML API Email Verification API Integrations
The Email Verification API can be connected with external tools to simplify its use, including:
- Integration with Splunk
- WhoisXML API Postman collection
Who Is WhoisXML API Email Verification API For?
WhoisXML API Email Verification API is well-suited for a wide range of industries and sectors, which may include:
- Cybersecurity
- Financial services
- E-commerce
- Marketing
- Telecommunications
Is WhoisXML API Email Verification API Right For You?
Organizations that rely on accurate email data for compliance, marketing, or security operations often face challenges with invalid or risky email addresses. WhoisXML API Email Verification API helps by validating addresses in real time, reducing bounce rates and fraud risk. It suits developers, security teams, and operations departments managing large contact lists. The platform serves notable clients such as eBay, DuckDuckGo, and Google.
Still not sure about WhoisXML API Email Verification API? Contact our support team at (661) 384-7070 for further guidance.
WhoisXML API Email Verification API Features
The platform identifies email addresses from known disposable providers, including over 2,000 sources like Mailinator and GuerrillaMail. By filtering temporary or throwaway accounts, it helps maintain clean contact lists and prevents misuse of freemium services or fraudulent registrations.
Email Verification API provides ready-to-use client libraries for Hypertext Preprocessor (PHP), Python, Node.js, Flask, and Express.js. These libraries allow developers to integrate verification functions into applications seamlessly, matching system requirements without manual configuration.
The API checks whether an email address is linked to a custom business domain or a generic free service. This helps organizations validate professional contacts, improve user authenticity, and reduce the risk of spam or fraudulent accounts during registrations and communications.
