After you have completed the voicemail recording session, you can now listen, share and download your recorded voicemails. From the www.VoicemailsForever.com website, login to the online dashboard with your PIN and Password.
Apple Visual Voicemail is a quick & easy way to scan & manage voicemails on screen. Simply tap the voicemail icon on your iPhone to see all your voicemails as a list on your screen. No more calling up to listen to your messages. View and manage the list of voicemails from your handset screen. Pause, stop, replay, fast forward, call back, and delete messages on screen. Change your voicemail password and manage greetings

With iMazing, you can easily save your voicemail as an audio file, to your computer or to an external drive.
With this method, you don’t need a third-party app. Call the person you want to chat with, then tap the “Add Call” button on your phone’s screen. Dial your own phone number—the one you’re calling from. This will take you to your voicemail. Once your voicemail has started recording, tap the “Merge Calls” button on your screen. Now, you’ll record your phone conversation onto a voicemail message. When you’re done with the call, you can tap the share button to export it to your Mac via Airdrop, to the Voice Memos app, or transfer it via email or text message. The file is recorded as an M4A, so depending on what you want to do with it, you may need to convert it to MP3 before uploading it to other apps.