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+ 0 = . / , ] g " # ) > /v1/apis · THE FREE API DIRECTORY
Public APIs[0020]
20 free public APIs across 52 categories. Filter by auth, CORS, HTTPS support — find what you need to build with.
Abstract Email Validation
Validate email addresses for deliverability and spam
Academic Email API
This API allows you to verify whether an email belongs to a recognized educational institution
Cloudmersive Validate
Validate email addresses, phone numbers, VAT numbers and domain names
Emailvalidation
E-Mail address validation
Enveloop
Design, host, and send emails and texts. All from one place - with a simple API
ImprovMX
API for free email forwarding service
IndiePitcher
Everything email for your startup with markdown support
MailboxValidator
Validate email address to improve deliverability
Mailtrap
A service for the safe testing of emails sent from the development and staging environments
NoParam
Email validation API for real-time & bulk checking
Notilify
A seamless messaging platform & API to send all types of SMS
Proweblook Email Checker
Validate email addresses without sending
Resend
Email API for developers
Sendgrid
A cloud-based SMTP provider that allows you to send emails without having to maintain email servers
Sendinblue
A service that provides solutions relating to marketing and/or transactional email and/or SMS
Sweego
Self-serve multichannel notification platform for transactional email, SMS, push web& mobile, chat, in-app
Temporary and Disposable emails API
This API provides temporary & disposable email addresses
Trueguard
Trueguard offers API for detecting temporary emails, free-tier abusers and automated bots
Verifier
Verifies that a given email is real
Zyntra
Unlimited e-mail inboxes with API access. Catch OTPs, reset links, and sign-up emails in test flows