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What is Zavu?

Zavu acts as a consolidated API that addresses all your messaging requirements, enabling you to send and receive SMS, WhatsApp messages, emails, voice calls, Telegram messages, and more through a single integration point. This platform allows developers to simplify the messaging workflow, eliminating the difficulties associated with managing various messaging systems by consolidating numerous APIs, SDKs, authorization processes, webhook patterns, sender settings, template validations, and error tracking into one SDK, a uniform webhook structure, and a centralized dashboard. Built with AI agents in mind, Zavu facilitates their global communication capabilities across SMS, WhatsApp, email, and voice, while providing developers with access to fully functional SDKs in languages such as Node.js, Python, Ruby, Go, PHP, and Java. The system’s Smart Send and AI Routing features effectively determine the best messaging channel—whether SMS, WhatsApp, or email—based on the recipient's preferences, thus optimizing delivery through comprehensive platform-wide intelligence and automatically switching to alternative channels as needed. Throughout this process, the system ensures that context is preserved, duplicates are avoided, and expenses are carefully tracked during every stage of the fallback mechanism, guaranteeing efficiency and transparency for users. Furthermore, Zavu's all-encompassing strategy facilitates smooth integration with existing workflows, significantly improving the overall experience for users and developers alike.

What is Prelude?

Prelude is a comprehensive SMS API solution that simplifies global phone number verification for businesses. By integrating with over 30 providers, it automatically determines the best route, ensuring fast delivery at the lowest cost. Prelude utilizes a multi-channel approach, offering WhatsApp, Viber, and SMS, with automatic fallback to ensure message delivery. Equipped with advanced fraud detection models and four layers of protection, it provides businesses with the most effective anti-fraud measures to protect both users and budgets. Businesses can track and optimize their verification processes with real-time analytics, conversion metrics, and transparent data. Designed for ease of use, Prelude offers a minimalist API, swift implementation, and detailed SDKs, allowing developers to integrate and scale quickly. With dedicated support and transparent pricing, Prelude is ideal for startups, scale-ups, and enterprises needing reliable and secure OTP solutions.

Media

Media

Integrations Supported

Claude
Claude Code
Facebook
Facebook Messenger
Go
Instagram
Java
Node.js
PHP
Python
Ruby
Telegram
WhatsApp

Integrations Supported

Claude
Claude Code
Facebook
Facebook Messenger
Go
Instagram
Java
Node.js
PHP
Python
Ruby
Telegram
WhatsApp

API Availability

Has API

API Availability

Has API

Pricing Information

$21 per month
Free Trial Offered?
Free Version

Pricing Information

$0.03 per verification
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Zavu

Date Founded

2025

Company Location

United States

Company Website

www.zavu.dev/

Company Facts

Organization Name

Prelude

Date Founded

2023

Company Location

France

Company Website

prelude.so/

Categories and Features

Categories and Features

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