Give your users the ability to take back messaging mistakes, after they hit ‘Send.’

messaging app

Interested in developing your own messaging strategy? Our whitelabel app has everything you need to get started

Integrates with your app

Looking to increase usage of your existing messaging experience? Our SDK is developer-friendly and delivers comprehensive user analytics.


Making the transition to RCS? We integrate directly into the default messaging experience.

How It Works

OST’s patented technology implements user-defined rules to delay message send just long enough for users to change their mind if they want to take a message back.

Easy to implement

All the functionality you need is well-documented in our simple SDK.

Better user experience

Your messaging user flow will stand out when users can take back messages with a simple swipe.

AI-driven insights

We provide a comprehensive picture of your users’ messaging behavior through our reporting API (Coming soon!)