If you have a pre-recorded sound file which you want to use for your voice broadcasting campaigns, you can easily upload it. Upload multiple audio files at a time when you set up your voice campaign in popular formats such as .wav and .mp3. If your sound file is in a different format, let our customer care team know and we will do our best to ensure that you can upload it. If you don't have a sound file to use or you don't have voice recording technology, you can use our text to speech feature, which you can learn more about here.