what is mailbox number

A mailbox number is a unique identifier assigned to a voicemail account that is used to access voicemail messages. The mailbox number is generally the same as the phone number assigned to the device. When setting up voicemail, some systems may prompt the user to enter a mailbox number. It is important to know the mailbox number in order to access voicemail messages. If you are having trouble accessing voicemail or receiving messages, it may be helpful to check the mailbox number and ensure that it is correct.