To send a phone blast you can create a recording by calling us or having our system call you. In addition, if you already have an audio recording created through some other program, you can simply upload that audio file on our website. Just make sure it is in wav or mp3 format and that it is not longer than the maximum message length for your account (which is two minutes for most accounts). After you've uploaded the audio you're only a few clicks away from sending your phone blast and getting your message out!