Google has added the function to write messages to your app Duo to make voice and video calls.
Now when the called subscriber does not answer, the app will offer to make him a video or a voice mail for up to 30 seconds. If the caller «hangs on a wire» for more than 60 seconds, the recording begins automatically.
Left messages appear next to the names of contacts who poisoned them. Each message disappears within 24 hours of first viewing. To avoid this, you can save a message locally on the device. When you activate the backup saved messages are duplicated in the cloud.
Google Duo is available for free for iOS and Android.