TXT is a DNS record, containing info in human-readable form for external sources to gain information about a particular domain or subdomain. In the most common case, this sort 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 web traffic analytics platform. Due to the fact that only the domain address owner/administrator can add custom DNS records, the TXT record works as a proof of ownership for the firm providing the service. Another popular use for this kind of records is the e mail SPF (Sender Policy Framework) protection, which ensures that an e-mail address won't be spoofed and that individuals will not get unsolicited mail from allegedly your mailbox. The TXT record contains info about the mail server where your digital messages come from and functions as confirmation that it is a reliable one. As there are no standards regarding the content of such a record, you could add any other information as well.