TXT is a DNS record, which contains info in human-readable form for external sources to obtain information regarding a certain Internet domain or subdomain. In the most common scenario, this kind of record is used to prove that you own a domain in case you're trying to add it to a search engine or to some site traffic analytics platform. As only the domain address owner/administrator can add custom DNS records, the TXT record serves as a verification of ownership for the business providing the service. Another popular use for this kind of records is the email SPF (Sender Policy Framework) protection, that helps to ensure that a particular email address will not be spoofed and that individuals will not get junk e-mail from allegedly your mailbox. The TXT record features info about the mail server where your electronic messages come from and serves as verification that it is a reliable one. Since there are no standards about the content of this kind of a record, you can add any other information also.