2. Add a condition that will search for data in a message or topic. The rule should be to understand what to look for - phone number, e-mail, or name. And also - where exactly in the letter to look for it. For example, in our example, after the word e-mail. To do this, you need to specify the data that you want to find in a special format - a regular expression. This gibberish is looking for an e-mail.