We highly recommend that you always leave a voice mail when your lead doesn’t pick up. Leaving a voice mail will increase your chance to get a call back or an email from your lead. If you call and don’t leave a voice mail, your lead probably won’t even recognize your phone number nor why you called. Hence, he won’t call you back.
This is a voice mail script that works well. Feel free to use it as is or to tweak it to your liking and use it.