Alexa has 2 new privacy features on your Amazon Echo. Here's how to use them - CNET

Of course, you can also manage this in the Alexa app by going to More > Settings > Alexa Privacy > Review Voice History > filter by All History > and select Delete all my recordings.

Maybe you can't always remember to tell Alexa to delete your voice history, which is where this second privacy setting comes into play.

You can automatically delete your Alexa smart home history that's older than three, or even 18 months. .

Then tap Manage Your Alexa Data and scroll down to the section Smart Home Device History and select Choose how long to save history.