On the Phone tab, click the voicemail icon below the dial pad, and then click Change Greetings. Skype for Business calls your voicemail and guides you to record a personal greeting.
However, there are a few different “types” of a voicemail that you may be able to have on your device. One is a Visual Voicemail and the other is just a standard voicemail that you had on your landline a few years ago. Visual voicemail lets you physically see and play all of the voicemails, while regular is just done through the following audio prompts to hear your voicemails. Visual Voicemail is only offered throughout certain providers (and some might make you pat extra), so there is no guarantee that you will have it on your device.

Step 4: You can either choose a Default greeting, or you can select Custom to record your own greeting.
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.