Sites and apps similar to iP.1 RESTful API include Telnyx. It's paid, but Atomic SMS Sender is free. Other options are Twilio, SMSAPI, Hilos by ActiveCampaign and textbee.dev. You're spoiled for choice with Email Marketing Services like iP.1 RESTful API: we list more than 25 alternatives for Android, iPhone, Windows, Linux and iPad.
All-in-one cloud communications platform and API with carrier-grade voice, data and messaging capabilities. Offers voice services such as Origination, Termination and SIP trunking over the Internet.
United States
Twilio is a web-service API that lets you use your existing web languages and skills to build voice and SMS applications. We focus on building a simple, powerful, pay-as-you-go communications platform so that you can focus on what you do best.
United States
SMSAPI.com is browser platform for bulk SMS and other SMS marketing solutions. SMSAPI offers bulk SMS, MMS, voicemailing, HLR services, shortcode, SMS notifications, newsletter SMS, MMS coupons, mail2SMS, two-way SMS and other mobile services.
Czechia
EU
Atomic SMS Sender supports 800 networks worldwide, enabling mass text ads, alerts, and notifications. Offers competitive pricing, dynamic sender IDs, free SMS testing, API integration, and a desktop or browser interface for seamless campaigns and delivery monitoring.
United States
Platform for WhatsApp API that allows you Profile leads, automate follow-ups and integrate with your favorite tools to increase conversion.
textbee.dev is an open-source SMS gateway that enables users to send and receive SMS messages via a web dashboard or a REST API. Perfect for businesses, developers, and hobbyists who need a reliable and cost-effective way to automate SMS messaging.
Ethiopia
Plivo offers a simple, quick, and scalable way to modernize customer communications. Businesses of all sizes — from growing startups to public companies — rely on Plivo to deliver better customer experiences.
United States
KAP Computer Solutions Pvt. Ltd., (KAPSYSTEM) pioneer in BULK SMS Solutions. KAPSYSTEM provides messaging and voice communications with comprehensive and customized platform for all businesses.
India
Tellephant is a one stop shop for everything you need to grow your business. Make your business more accessible with WhatsApp!
Cheap SMS Gateway with simple API and 24/7 Support. Pricing cheaper than Twilio in 2-3 times. Good choice for startups.
United Kingdom
