TXT is a DNS record, that contains information in human-readable form for external sources to gain info about a certain domain or subdomain. In the most common scenario, such a record is used to prove that you own a domain in case you are trying to add it to an Internet search engine or to some traffic analytics platform. Due to the fact that only the domain owner/administrator can add custom DNS records, the TXT record serves as a proof of ownership for the firm supplying the service. Another popular use for this type of records is the email SPF (Sender Policy Framework) protection, which ensures that an email address isn’t spoofed and that individuals will not get junk e-mail from allegedly your mailbox. The TXT record contains details about the mail server where your online messages come from and serves as validation that it's a reliable one. As there are no rules regarding the content of this type of a record, you could add any other information also.