Recordator has a free 10-minute recording trial; otherwise it costs $10 for 67 minutes to start. It works much like RecordiaPro, giving you a number to set up a 3-way conference that does all the recording. For that price, Recordator throws in full call transcription. It also supports the merge-call option.
If your carrier supports the iPhone voicemail feature, you can retrieve and listen to your voicemail right from within the “Phone” app and call your contacts back by simply tapping their messages. That type of functionality is pretty neat and useful, because it saves you actual time. If not supported by your carrier, you will not be able to see the visual overview of your voicemail inbox and use any of the related features. Tapping the “Voicemail” tab in your “Phone” app will simply call the number associated with your voicemail box. So let’s get going with creating our custom voicemail greeting on iPhone! How to record your own Voicemail on iPhone Phone → Voicemail → Greeting → Custom → Record → Save

6. Adele Sings Hello as an Outgoing Phone Message. A great way to incorporate a fun voicemail greeting in today’s age is re-writing the lyrics to a current billboard topping hit. Ellen DeGeneres did just that when she asked Adele for a little favor; to sing a little ditty inspired by the number one song, “Hello.”.
Once you’ve done that, head to the settings menu (the gear icon) on the Google Voice homepage and select Settings. Then, click the Calls tab. In the section “Call Options,” check off “Enable recording (4), Switch (*) and Conference options on inbound calls.” With this setting selected, whenever you make a Google Voice call on your phone, you can tap the number 4 on its dial pad to start recording.