Sites and apps similar to Authkey - SMS & WhatsApp API include UniStack. It's paid, but Wazo is free. Other options are Telnyx, Twilio, Smarter Contact and Lead Sherpa. There's no shortage of Email Marketing Services like Authkey - SMS & WhatsApp API, with more than 50 alternatives for Android, iPhone, Windows, Mac and iPad.
ExpressText is a SMS Marketing provider that allows anyone with access to a computer and internet connection to utilize mobile marketing, one of the most effective forms of consumer advertisement. With our service, individuals and businesses can manage and execute effective SMS...
Communications API Platform - Easily add texting or calling to any app through http API. Send/Receive text messages, picture messages, phone calls in one line of code.
United States
Spring Edge Technologies Pvt. Ltd. is one of the premier business communication solutions provider, Spring Edge's core services includes messaging and voice communications with comprehensive and customized platform for all business scales.
engageSPARK enables anyone, anywhere to build and launch SMS and Voice Call messaging, surveying, and decision tree programs to 200+ countries – within minutes. It is a self-service website where any non-technical person can easily, quickly, and cheaply create messaging...
Philippines
Zujo Now is the simple video calling SDK that makes developing video calling apps simpler! It enables developers to build engaging and scalable video calling experiences without writing complex and lengthy code.
Start sending text messages within seconds through an intuitive platform, Automate your SMS marketing campaigns. For enterprise companies and volume players, Releans is certainly a terrific option.
International Communication Platform as a Service (CPaaS) provider with zero-hop connectivity to telecoms globally. It supports all major mobile communication channels, like SMS, email, WhatsApp, Viber, voice, video and more, over API and web UI.
Send cheap sms worldwide with instant delivery and reports in real-time. The best Bulk SMS service provider for SMPP, SMS API, Receiving 2-way SMS, Resellers
An AI-powered WhatsApp lead qualification and automation platform that helps businesses identify high-intent leads, automate follow-ups, manage conversations, and improve sales conversions.
MSG91 is a customer communication platform that helps businesses connect with customers through SMS, WhatsApp, Email, Voice, and customer support solutions. Its scalable APIs and engagement tools enable seamless communication, customer authentication, and support across multiple channels.
India
OwnChat streamlines WhatsApp communication for businesses. With WhatsApp commerce, automation, CRM, and notification campaigns, businesses can sell products, automate responses, manage interactions, and send targeted notifications.
Fewsecond is a web platform offering Bulk SMS services, Short number and APIs for integration in Web applications and Softwares.
Croatia
EU
