Python alone isn’t quite enough though. For phone calls, SMS and voicemail support you need additional tools, similar to reverse phone lookup for those who are interested in using a caller id system. Enter Twilio.
For monitoring the online status of the Raspberry Pi, I turned to Uptime Robot, which offers both free and paid plans. Since we’re not an enterprise, the free plan is fine for our needs: Every five minutes, It pings the URL of the webserver on our Raspberry Pi. If there’s a problem, Uptime Robot sends me an email to research the issue.

Voicemail greetings for business have to be very clear, precise, and to the point. Businessmen tend to avoid frivolous talks, so it is important that you stick to the basics. On the other hand, you can be funny or a little less formal while recording a voicemail for your friends and family. However, remember to adhere to voicemail etiquette while recording these greetings. So, this is where I sign out. Leave a message, I mean a comment if you like my voicemail greeting suggestions!
Once you thank your customers for calling, state your name and the department. Make sure to speak clearly so the caller knows they called the right place and can understand what is being said. Don’t rush through in case the caller wants to write the information down.