TXT is a DNS record, containing info in human-readable form for external sources to gain information about a particular domain name or subdomain. In the most common situation, 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. Due to the fact that only the domain name owner/administrator can add custom DNS records, the TXT record serves as a verification of ownership for the business supplying the service. Another popular use for this type of records is the email SPF (Sender Policy Framework) security, that ensures that an e-mail address will not be spoofed and that others will not receive junk e-mail from allegedly your mailbox. The TXT record features information about the mail server where your digital messages originate from and functions as confirmation that it's a trusted one. As there are no standards about the content of this type of a record, you could add any other info also.