By default the Full Message Text will be read over the phone by a relatively natural-sounding computer voice. If you want to record a message with your own voice instead, click the Record Voice button.
Selecting Record one voice message for all recipients brings up the following:
Follow the prompts above, then click Close.
You can try both methods in Practice Mode to hear both the computer voice and your own recording to see which one you like better. Keep in mind that using the speech generator is faster and in an emergency might be the better choice.
Click the Send Alert button to save the alert.
