When recording a personalized voicemail greeting on your office phone, your greeting should include only the company name and your extension number. When recording a personalized voicemail greeting on your office phone, your greeting should include only the company name and your extension number. State your name and spell it out if you’re asking callers to follow up with written correspondence. State your company name and department name. Let callers know that you cannot take their call right now. Invite them to leave a message. What should I record on my work voicemail?
You can delete individual voicemails as you listen to them, and most networks will automatically delete old voicemails after 30 days. However, few networks offer a simple way of deleting multiple voicemail messages when your mailbox is full – unless you can use an option such as Visual Voicemail, which lets you delete messages with a quick tap of your finger.

This data usage will be taken from your data allowance when the message is received. Once the message is received, it can be listened to without any further data connection & without incurring further cost.
Some wireless carriers give their subscribers the option to send voicemail directly without ringing the other party’s line. This generally is only available if both parties are on the same carrier, but when it’s available it’s super easy.