Of course, we want to know as soon as an incoming voicemail is saved, so again, it’s Twilio to the rescue. By adding a few lines of code to our Python script, Stacey and I each get an SMS notification telling us there’s a new message. Note that Twilio’s API requires a separate call for each message to be sent, which is why the similar code repeats once for Stacey’s phone number and then again for mine. If you plan to send bulk messages from Twilio, I expect that you can build a list of phone numbers and loop through them with the API call. Since we only have two contact numbers and don’t expect to add any more, I decided not to loop through a list of two elements.
2) Once on the page, click on [Add new Voicemail] tab. You will need to enter a Name, a Mailbox ID, a Password, an "Email if Attach message to email" is set to Yes, your timezone and all other settings needed.

And, once you record your voicemail greeting, all you have to do is provide your message in an .mp3 or .mp4 format to your phone provider, who will upload the message.
If you're using an in-house system like AT&T, Mitel, Avaya, etc., I'll create the phone greetings to input into these type of systems. Also, "Dial-In" service can be provided for phone systems that are unable to accept recordings. • Sub-Directory Recordings (After Hours, Hours and Location, Call Center, Office Closure-Inclement Weather, Product Descriptions, Returns Information, Shipping Info, Tech-Support Help, etc.