TouchCopy allows you to copy and export Voicemail messages you have received on your iPhone.
TouchCopy will display and extract voicemails if your iPhone supports Visual Voice Mails. These will be voice mails that are provided as part of the Visual Voicemail data plan from your mobile service provider. You can determine if your wireless carrier includes Visual Voice mail as part of their service from here...
TouchCopy displays a list of people or senders who have left you a Voicemail Message. Clicking on a name in the list displays the voicemails left only by that person.
TouchCopy also highlights those voicemails that have not yet been listened to on your iPhone and those voice mails that you have deleted from your iPhone. You can click on the "Deleted" or "Unplayed" entries in the sender's list to view just the voicemails under those categories.
Copying Voicemail to your Computer
How to Save Voicemails from iPhone to Computer - Select one or more Voicemail message(s) from the list and click "Copy" in the Voicemail browser or the "Copy to PC" or "Copy to Mac" button in the main TouchCopy control bar.
If you do not select any individual messages to copy, TouchCopy will copy all the voicemails currently listed. This may be all the voicemails on your iPhone or messages from a subset of senders depending on what has been selected in the senders list.
Playing Back Exported Voicemails
TouchCopy will save your voicemail messages the format they are stored on your iPhone - as .amr files. You can play back your saved iPhone voicemail messages using the freeware AMR Player software or QuickTime for Mac.