UniStack's algorithms protect your phone numbers from getting blocked and maximize text messaging conversion.



Bulk SMS is described as 'Provides application-to-person (A2P) messaging services to large and small businesses, public benefit organisations and individuals' and is a CRM system in the office & productivity category. There are more than 25 alternatives to Bulk SMS, not only websites but also apps for a variety of platforms, including SaaS, Android, iPhone and Windows apps. The best Bulk SMS alternative is UniStack. It's not free, so if you're looking for a free alternative, you could try Brevo or TextBee. Other great sites and apps similar to Bulk SMS are BatchLeads, Smarter Contact, REI BlackBook and Twilio.
UniStack's algorithms protect your phone numbers from getting blocked and maximize text messaging conversion.



Unified platform offering email, SMS, automation, transactional messages, integrations with CMS, e-commerce, social and chat tools, robust API, competitive email-based pricing, free and scalable plans, and multi-channel audience engagement management.




BatchLeads is an all-in-one platform for real estate professionals with the aim to help real estate professionals find more sellers, close more deals and maximize revenue.




Smarter Contact is an SMS Marketing Software that is undisputedly the market leader in skiptracing (number lookup) using the most advanced geolocation data. The highest hit rates ensure that you're getting in touch with your customers.



REI BlackBook converts more of your leads into deals and builds a predictable sales system with an all-in-one marketing and sales tool kit built for investors.




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.


Lead Sherpa is a cloud-based marketing campaign management solution that enables organizations to create, run and manage personalized marketing campaigns.




Launch Control is a cutting-edge SaaS texting platform that focuses on subscriber success and text marketing innovations.


Cloud-based SMS messaging service provides bulk text notifications, alerts, and campaigns. Features 2-way chat, contact management, API, mobile keywords, polling, analytics, toll-free and scheduled messaging, flexible pricing, and virtual numbers.




REsimpli is an all-in-one real estate investor software. It’s the most powerful real estate investor software built by other active real estate investors like yourself that eliminates the need for multiple software.




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.


TextBee 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.
