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Best message confirmation APIs

WhatsApp OTP API

The WhatsApp OTP API enables seamless user authentication and transaction verification by sending OTPs directly to phone numbers. It receives a phone number and message content, then responds with a status and transaction ID. Ideal for user logins, transaction confirmations, and password resets, it offers substantial savings with plans starting at $24.99 for 2,500 OTPs. 🚀

Communication & Messaging

100% uptime 136ms avg MCP ready

Emailer API

Send OTP and notifications to your users by email. Forget about configurations and records with this API.

Communication & Messaging Free 7-Day Trial

100% uptime 358ms avg MCP ready

Poland SMS Sender API

Empower your communication with the Poland SMS Sender API. Seamlessly integrate SMS functionality into your applications, enabling instant and reliable messaging to Polish contacts. Unlock the potential to engage, inform, and connect with your audience effortlessly, ensuring your messages reach their destination with speed and precision.

Communication & Messaging

100% uptime 291ms avg MCP ready

InstantCode WhatsApp API

Send verification codes effortlessly to your users through WhatsApp. Enjoy instant message delivery to any country around the globe, ensuring a smooth and secure verification process. Enhance your user experience with reliable, real-time communication!

Communication & Messaging Free 7-Day Trial

100% uptime 112ms avg MCP ready

Communication Authenticator API

"Communication Authenticator API: Ensure email accuracy effortlessly. Confirm deliverability, syntax, and domain validity for seamless communication. Simplify your verification process."

Communication & Messaging Free 7-Day Trial

100% uptime 153ms avg MCP ready

Email Confirmer API

Verify email addresses quickly and accurately with our Email Confirmer API for reliable communication.

Communication & Messaging Free 7-Day Trial

100% uptime 395ms avg MCP ready

Checkmail API

Email verification API with real SMTP RCTP TO check, DNS, disposable, catch-all, and role-based detection in a single request.

Communication & Messaging Free 7-Day Trial

100% uptime 482ms avg MCP ready

Smart Mail Verify API

Validate email addresses by verifying their format, domain health, and disposability, ensuring reliability for registrations, marketing, and secure communications.

Communication & Messaging Free 7-Day Trial

100% uptime 120ms avg MCP ready

Global SMS Portal API Premium API

Elevate your communication with Global SMS Portal API for seamless messaging worldwide!

Communication & Messaging Free 7-Day Trial

100% uptime 4,328ms avg MCP ready

Rapid Email Confirmation API

Confirm email addresses rapidly to boost marketing effectiveness and user trust in your campaigns.

Communication & Messaging Free 7-Day Trial

100% uptime 416ms avg MCP ready

Worldwide SMS Solutions API Premium API

Worldwide SMS Solutions API offers versatile messaging capabilities for every need.

Communication & Messaging Free 7-Day Trial

100% uptime 4,144ms avg MCP ready

Universal SMS Messaging API Premium API

Universal SMS Messaging API ensures reliable and efficient texting globally.

Communication & Messaging Free 7-Day Trial

100% uptime 4,330ms avg MCP ready

Cross Border SMS API Premium API

Cross Border SMS API simplifies international messaging with reliable delivery.

Communication & Messaging Free 7-Day Trial

100% uptime 3,948ms avg MCP ready

International SMS Gateway API Premium API

Send messages across borders effortlessly with our International SMS Gateway API.

Communication & Messaging Free 7-Day Trial

100% uptime 2,514ms avg MCP ready

Temporary Mail Validator API

Ensure data integrity by identifying temporary email addresses instantly, preventing spam signups and improving communication with genuine users.

Security & Cybersecurity Free 7-Day Trial

100% uptime 764ms avg MCP ready

CI CD Email Testing Solutions FreeCustomEmail - Temp Email and OTP Testing API

Optimize your CI/CD pipeline with our email testing solutions—lightning-fast and robust!

Communication & Messaging Free 7-Day Trial

100% uptime MCP ready

Marketing Outreach Email Authenticity API

Boost your outreach success with the Marketing Outreach Email Authenticity API, ensuring genuine engagement.

Communication & Messaging Free 7-Day Trial

100% uptime 762ms avg MCP ready

Mail Assurance API

Mail Assurance API Validates email addresses in real time, confirming the existence of the mailbox, ensuring accuracy and reliability in email delivery.

Communication & Messaging Free 7-Day Trial

100% uptime 797ms avg MCP ready

FinTech Client Communication Verification API

Streamline FinTech communication with robust verification to enhance client trust and security.

Communication & Messaging Free 7-Day Trial

100% uptime 10ms avg MCP ready

Email Confirmation API

Quickly validate email addresses, ensuring accuracy and reliability. Improve data integrity, reduce bounce rates, and optimize communication strategies effortlessly.

Communication & Messaging Free 7-Day Trial

100% uptime 3,421ms avg MCP ready

Communication Validation API

Elevate your communication with our Communication Validation API seamless integration, real-time processing, and precision to ensure accurate, reliable, and secure email verification.

Communication & Messaging

100% uptime 8,735ms avg MCP ready

Email Sanity Checker API

Ensure email integrity with Email Sanity Checker API, detecting spoofing and phishing threats seamlessly.

Finance & Payments Free 7-Day Trial

100% uptime 813ms avg MCP ready

International Contact Quality Assurance API

Optimize global connections with the International Contact Quality Assurance API, ensuring reliable communication.

Communication & Messaging Free 7-Day Trial

100% uptime 980ms avg MCP ready

Confirm Email API

The Confirm Email API ensures real-time validation, enhances security, and improves user experience by confirming the accuracy of submitted email addresses.

Security & Cybersecurity

88% uptime 574ms avg MCP ready

Trash Email Checker API

Effortlessly create and manage temporary email addresses for secure sign-ups and online privacy.

Finance & Payments Free 7-Day Trial

100% uptime 7,825ms avg MCP ready

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Tags

Best message confirmation APIs

WhatsApp OTP API

Emailer API

Poland SMS Sender API

InstantCode WhatsApp API

Communication Authenticator API

Email Confirmer API

Checkmail API

Smart Mail Verify API

Global SMS Portal API Premium API

Rapid Email Confirmation API

Worldwide SMS Solutions API Premium API

Universal SMS Messaging API Premium API

Cross Border SMS API Premium API

International SMS Gateway API Premium API

Temporary Mail Validator API

CI CD Email Testing Solutions FreeCustomEmail - Temp Email and OTP Testing API

Marketing Outreach Email Authenticity API

Mail Assurance API

FinTech Client Communication Verification API

Email Confirmation API

Communication Validation API

Email Sanity Checker API

International Contact Quality Assurance API

Confirm Email API

Trash Email Checker API

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