Will prospects even listen to my message, or will it just be deleted as soon as it's received? If my message is heard, what are my chances of getting a response? Shouldn't I just focus on email and forget sales voicemails altogether?
If a call happens outside normal business hours, you can create a specific auto-attendant that’ll handle those calls with an alternative greeting message and menu options. An auto-attendant is an excellent option for businesses with regular working hours, but you might need a more robust solution if you plan to offer 24-hour service.

We’re all familiar with this type of voicemail greeting. Simply put, a caller reaches you by dialing your number or extension directly. For an optimal personal voicemail greeting, be clear about who you are, the team you’re on, and when the caller can expect a callback. Unlike company and department voicemail greetings, you may not be able to configure a greeting for open and closed business hours. If that’s the case, use a general voicemail greeting that accommodates both scenarios.
A busy greeting should tell callers that your phone lines are currently in use. You can direct people to wait on hold or leave a message. For example, “Hello, you’ve reached [company name]. Our representatives are currently helping other customers. Please stay on the line to speak with the next available team member, or press one to leave a message and we’ll call you back.”