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Courier

Read 10 Courier reviews and testimonials from customers, explore 16 case studies and customer success stories, and watch customer videos to see why companies chose Courier as their Transactional Messaging Software

Courier is the fastest way to add multi-channel notifications to your web, desktop, or mobile app.With one API call, you can reach your users on any channel – email, SMS, push, chat, and more. Trusted by innovative startups like Lattice, LaunchDarkly, LTSE, Bluecrew, and Blissfully. Backed by Y Combinator, Bessemer Venture Partners, Matrix Partners, Twilio, and Slack Fund.

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Customer Rating Review Score based on 1189 reference ratings
4.8/5.0 (1189)
  • Fall 2026 Rising Star Push Notification Software

10Testimonials

  • “With Courier, we can manage every notification, for every user, across every channel, in one easy-to-use platform.”

  • “The first comment I received from a developer when they first started to use Courier was how easy it was to create a new notification.”

  • “We were building out a new team to focus entirely on our notifications infrastructure when we found Courier. Now we support more channels with one line of code.”

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16 Case Studies

  • LaunchDarkly streamlines approvals for 5,500+ organizations with Courier

  • Twilio unifies in-app notifications for 10 million developers with Courier

  • NAV launches multi-channel notifications in 2 months with Courier

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Additional Courier Information & Resources

Read Courier Reviews, Testimonials & Customer References from 10 real Courier customers.

Browse Courier Case Studies, Customer Success Stories, & Customer References from 16 businesses that use Courier.