TXT is a DNS record, containing information in human-readable form for external sources to gain info about a certain domain 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 an Internet search engine or to some traffic analytics platform. Since only the domain name owner/administrator may add custom DNS records, the TXT record functions 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) protection, which makes sure that a particular email address won't be spoofed and that others will not receive junk mail from allegedly your mailbox. The TXT record features information about the mail server where your online messages come from and serves as validation that it is a trusted one. As there are no standards regarding the content of such a record, you could add any other information also.