Introduction

In Chapter 1, Into the Frying Pan, we brought to you some handy recipes for Twilio; we're going to continue that in this chapter.

First, we'll show you how to generate usage records that come in handy for tracking usage across your Twilio account, especially when you have a web app that has customers using it daily.

Call screening lets you check calls that are actually answered by a person; if a machine answers, we move on to the next phone number.

Buying a phone number is also handy when you have multiple users and want to let them purchase a phone number to use for their own account.

A voicemail system lets you give callers a voice mailbox to store messages in and then sends you an e-mail with the transcribed message.

Finally, the emergency calling system will try a list of phone numbers when you find yourself in an emergency situation, to find someone who answers.