If you’re contacting the same people with marketing voicemails and emails, you shouldn’t repeat information verbatim. By mixing up your approach, you make it more likely to get a response to at least one method. Also, your voicemails should be more personalized than your emails. For example, you could send an email to a contact – and 500 others – asking for feedback about a specific product they recently bought.
Follow the instructions and press that number. You will be asked to delete your current Voicemail greeting. Click on the ‘Yes’ button that appears on the screen if you want to remove that. You can save your new recorded Voicemail greeting or can use the default recorded option. From the home screen, select the Phone app. Note: Alternately, you can set up voicemail by selecting the Phone app then selecting and holding the 1 key. Select Keypad, then select the Visual Voicemail icon. Select Start. Select Ok. From any Home screen, tap the Menu key. Tap Settings. Tap Call settings. Tap Voicemail. Tap Voicemail again. View the voicemail number. Press and hold the 1 on your device’s dial pad to call and connect to your voicemail. Press the star * key to access the main menu. Press 4 to access the mailbox options. Press 7 to change the language of the voicemail prompts to either Spanish or English.

I assume it’s safe to say you’ve gotten really busy or this isn’t a top priority for you at the moment so I’ll take you off of my call list as to no longer interrupt your day.
A perfect sales voicemail should be in the neighborhood of 20 to 30 seconds -- not much longer, and not much shorter. I realize this is a very specific window of time, so let me explain the reasoning.