OTP stands for "one-time password". It is a security code that is sent to your phone number via text message or other means, and is used to verify your identity when logging into a digital account or performing other sensitive actions. OTPs are only good for one-time usage and are usually valid for a limited period of time, usually around 10 minutes.

To keep your messaging app clean and organized, you can use Google Messages to automatically delete OTPs after 24 hours. This feature is available on Android devices and can be enabled by going to the Messages settings and toggling on the "Auto-delete OTPs after 24 hrs" option. On iOS devices, this feature is available only if youve upgraded to iOS 17 or later.

In summary, OTPs are one-time passwords used for security purposes, and you can use Google Messages to automatically delete them after 24 hours to keep your messaging app clean and organized.