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Instant email address verification to filter legit addresses
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Free, powerful language detection JSON API for 173 languages, supporting single and batch requests, PHP, JavaScript, Python, Ruby, Java, and more.
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Lob is the only automated direct mail platform that transforms your direct mail into intelligent mail that is scalable, personalized, and measurable.
MORE is an award-winning email verification API. It provides a simple, fast and secure way to verify email addresses in real time. Use MORE in sign-up forms, CRM and marketing platforms whenever you need to verify an email address with a high degree of accuracy.
Free and open source REST API that provides a simple yet effective way to validate and format a phone number.
Postman Echo is service you can use to test your REST clients and make sample API calls. It provides endpoints for GET, POST, PUT, various auth mechanisms and o
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Content validator against profanity & obscenity
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WebScaper Toolbox, Free IP/DNS/Domain/Whois/Email Validator API
Address Autocomplete | Use our Autocomplete API to suggest valid addresses as users type in realtime. Uses a simple HTTP endpoint.
Extract USPS addresses from any text with our easy-to-use API. Simple HTTP endpoint and SDKs. Try free now.
Validate and append data for any US postal address
Documentation, code and integration guides for the vatlayer API - free, instant EU VAT number validation, price calculation and VAT rates JSON API.