TXT is a DNS record, which contains data in human-readable form for external sources to gain information about a certain Internet domain or subdomain. In the most common scenario, such a record is used to prove that you own a domain name if you're trying to add it to an online search engine or to some website traffic analytics platform. Since only the domain owner/administrator may add custom DNS records, the TXT record serves as a proof of ownership for the corporation supplying the service. Another popular use for this kind of records is the email SPF (Sender Policy Framework) security, that helps to ensure that a particular email address shall not be spoofed and that others will not get unsolicited mail from allegedly your mailbox. The TXT record features details about the mail server where your digital messages arrive from and functions as verification that it's a reliable one. As there are no regulations regarding the content of this sort of a record, you could add any other information also.