Send or schedule a message to your subscribers. Outgoing messages are delivered at 250 texts/second.
Grow your lists
Easily create keywords and website forms so customers/members can join your lists.
See where new subscribers are coming from, capture data, and organize them into lists.
Track metrics such as link clicks, opt-ins, opt-outs, delivery rates and message replies. All in real-time.
Manage and respond to incoming messages from subscribers. Perfect for a text-enabled feedback, help, or support line.
Power your SMS application with our REST API, including custom webhooks.
Send messages, reply to incoming texts and much more with our iOS app (Android coming soon).
FCC/TCPA compliance. CTIA/MMA compliance. Carrier compliance. We have you covered. Learn more.
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.