TXT is a DNS record, containing info in human-readable form for external sources to get info about a certain Internet domain or subdomain. In the most common case, such a record is employed to prove that you own a domain if you're trying to add it to an Internet search engine or to some website traffic analytics platform. As just the Internet domain owner/administrator can add custom DNS records, the TXT record serves as a proof of ownership for the business supplying the service. Another popular use for this kind of records is the e-mail SPF (Sender Policy Framework) security, which ensures that an e-mail address won't be spoofed and that others will not get junk e-mail from allegedly your mailbox. The TXT record contains details about the mail server where your online messages originate from and functions as verification that it's a reliable one. Because there are no regulations regarding the content of such a record, you could add any other information also.