Rehearse or write down your message before recording it. Remember that old saying “practice makes perfect?” It’s certainly true when it comes to creating an electronic greeting. The more you’ve rehearsed, the easier the message will be to restate. If you don’t have time to practice, writing down the greeting before recording it – and then reading it aloud from the paper – may help you stay focused on the correct wording.
It offers FREE voice mail greetings for the different people that call your cell phone. It's called youmail. This youmail service can replace your cellular voicemail with a supposedly better voice mail system that includes a set of cool and different features such as different personalized greetings for each caller, online and phonebased

The only problem I have with the voices is that the French and Spanish ones are really hard to understand. It’s almost like the voices are speaking English words based solely on French and Spanish phonetic rules, instead of sounding like English in a French or Spanish accent. Either way, it was a jolly good time, and I recommend that you at least play with the app, if not actually use it on a regular basis.
On the other hand, please be advised that you can activate voicemail for free, even without unlimited subscription or a Skype Number. Refer to this support link for additional information. How do I use Skype voice messaging? In reply to Aljon_T's post on March 14, 2018