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Best customer loyalty APIs

Delivery Assurance API

Communication & Messaging

Delivery Assurance API: Improve communication integrity by verifying email addresses, ensuring syntax accuracy, deliverability and filtering out disposable or potentially harmful addresses.

100% uptime 75ms avg MCP ready

Communication Authenticator API

Communication & Messaging

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

Free 7-Day Trial

100% uptime 153ms avg MCP ready

FreeCustomEmail - Temp Email and OTP Testing API

Communication & Messaging

FreeCustom.Email is a powerful API that enables users to generate temporary email addresses for seamless online registration and OTP testing. With its user-friendly interface, you can effortlessly create disposable email accounts to bypass spam and enhance privacy, while easily receiving one-time passwords and verification emails without any hassle. Ideal for developers and testers, this API ensures secure and anonymous interactions with online services.

Free 7-Day Trial

100% uptime 398ms avg MCP ready

Email Authenticator API

Communication & Messaging

The Email Authenticator API ensures email authenticity by verifying format, domain existence, and temporary service status, bolstering communication reliability.

Free 7-Day Trial

100% uptime 181ms avg MCP ready

Address Authenticity API

Communication & Messaging

Effortlessly validate email addresses with our API, ensuring proper format, functional MX record, and filtering out disposable addresses. Enhance communication accuracy.

Free 7-Day Trial

100% uptime 548ms avg MCP ready

Love Connection API

Social Media & Networking

The Love Connection API offers engaging compatibility insights, enhancing user interaction in apps, websites, and social media platforms.

Free 7-Day Trial

100% uptime 664ms avg MCP ready

Trustpilot Feedback Capture API

Company Data

Capture valuable Trustpilot feedback to enhance your business strategies and foster customer loyalty.

Free 7-Day Trial

100% uptime 20ms avg MCP ready

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

Communication & Messaging

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

Free 7-Day Trial

100% uptime MCP ready

Marketing Outreach Email Authenticity API

Communication & Messaging

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

Free 7-Day Trial

100% uptime 762ms avg MCP ready

Email Reliability API

Communication & Messaging

The Email Reliability API ensures the accuracy and legitimacy of email addresses, offering a reliable solution for verifying and maintaining data integrity.

Free 7-Day Trial

100% uptime 5,522ms avg MCP ready

Custom Lead Generation API

Company Data

Tailor your outreach with the Custom Custom Lead Generation API API, designed for unique business needs.

Free 7-Day Trial

100% uptime 15,202ms avg MCP ready

Email Address Integrity API

Communication & Messaging

Email Address Integrity API: Enhance email accuracy instantly, ensuring messages reach their intended recipients with efficiency and reliability

Free 7-Day Trial

100% uptime 1,541ms avg MCP ready

Content Enhancement API

Commerce & eCommerce

Enhance your e-commerce product listings effortlessly with the Content Enhancement API. Craft engaging, SEO-friendly descriptions, increase visibility, and drive sales effectively.

Free 7-Day Trial

100% uptime 3,742ms avg MCP ready

Trustpilot Company and Reviews Data API

Company Data

Introducing the Trustpilot Company and Reviews Data API—a powerful tool for real-time access to comprehensive Trustpilot data. Seamlessly retrieve information on companies, businesses, reviews, categories, and more. Unleash the full potential of Trustpilot's rich data ecosystem with this exceptionally comprehensive API.

Free 7-Day Trial