No, you cannot know. The majority of the text mail services use internet-connected phone numbers. The emails and messages are sent using web hosts. So, it is tough to track the owner of the number. You can find out the owner of the text mail number by using the following tricks: 1. Send the message back to the voice mail subscriber. If the incoming will be enabled on the number, you will receive notifications. 2. Try the internet connection testing app if mail subscribers do not respond to your messages. These apps will assess the status of the internet connection. Whether the call received from the web was using a legitimate internet connection or from the dark layers of the internet. The scammers usually get connected from the deeper layers of the internet instead of the top layer. The purpose is to hide identity and remain protected from the security people. 3. Another possibility is that you use the cell phone spy app. The spy apps do deep searches and access a more comprehensive database of contacts, phone numbers, photos, and media. The spy app can search all activities of that number on social media and the web world. 4. Another safer way is that you contact the cybercrime services of your state. Cybercrime services will use advanced technology to track the text mail scammer shortly. 5. But do not skip the possibility that some genuine product sellers or marketing person may be on the backhand of the text mail message.