“(Intro) I’m calling regarding the voicemail I left you (earlier today/yesterday) about (example: how we recently helped competitor 1, 2, and 3 avoid ______ while ______) and wanted to see if it would make sense for us to have a conversation to determine if what we do would be of some help to you as well. If you’d like to discuss this further you can reach me at __________. I’ll send a follow up email to this message so if it’s easier to reply that way you can or if you’d rather talk via the phone, again, my number is _________.”
Leaving an impression with your voicemail message is just one way to communicate to your caller when you are not there. Here are some great and creative voicemail message samples you can look at incorporating as your greeting. [Your name's] voicemail is broken. This is his refrigerator. Please speak very slowly, and I'll stick your message to myself with one of these magnets.

A sales voicemail can't do too much for you if there's no room for any sort of progression. If you just give an explanation of your offering's benefits without establishing what that prospect should do or can expect next, you might close the door on a sale — straight off the bat.
Arguably the most intimidating factor when leaving a voice mail is the fact that once you leave the message, "in one take," there is no taking it back. That is why, especially in the business world, an overwhelming amount of people revert to email rather than leaving a voice mail message. Especially in a technologically advanced world, email or text messages are now used as a primary form of communication. Although there is a good argument behind opting for the written word over the spoken one, an email can lack the human touch, the emotion and enthusiasm in a voice, that can often times generate a better response. In fact, there is no impact that compares to delivering a clear, concise, professional message through your own unique human voice.