TXT is a DNS record, which contains info in human-readable form for external sources to get info about a certain Internet domain or subdomain. In the most common situation, this type of record is employed to prove that you own a domain in case you are trying to add it to an online search engine or to some web traffic analytics platform. Since only the domain owner/administrator is able to 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 email SPF (Sender Policy Framework) security, which helps to ensure that an e-mail address shall not be spoofed and that individuals will not get junk mail from allegedly your mailbox. The TXT record contains info about the mail server where your online messages come from and serves as validation that it's a reliable one. As there are no restrictions about the content of this sort of a record, you could also include any other info also.