Smarter SMS Marketing

Clearstream is online text messaging software
for businesses and non-profits.

Sign up for free. No credit card. No setup fees. No contract.

Simple, yet powerful

Faster than any other SMS software. Real-time analytics that will blow your mind. Features you'll actually use. Discover why Clearstream is the obvious choice for thousands of small businesses, non-profits and brands in the U.S.

Clearstream SMS marketing platform on desktop and mobile devices
See All Features

Features

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Send messages

Send or schedule a message to your subscribers. Outgoing messages are delivered at 250 texts/second.

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Grow your lists

Easily create keywords and website forms so customers/members can join your lists.

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Manage subscribers

See where new subscribers are coming from, capture data, and organize them into lists.

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Track performance

Track metrics such as link clicks, opt-ins, opt-outs, delivery rates and message replies. All in real-time.

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Smart inbox

Manage and respond to incoming messages from subscribers. Perfect for a text-enabled feedback, help, or support line.

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Robust API

Power your SMS application with our REST API, including custom webhooks.

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Mobile app

Send messages, reply to incoming texts and much more with our iOS app (Android coming soon).

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Legal compliance

FCC/TCPA compliance. CTIA/MMA compliance. Carrier compliance. We have you covered.

What our customers have to say

Clearstream does for texting what Mailchimp does for email. It's active, instant communication. It's what this generation expects, and for our organization it's the future of how we reach people.