TXT is a DNS record, which contains information in human-readable form for external sources to obtain information about a particular domain name or subdomain. In the most common case, this type of record is used to prove that you own a domain name if you're trying to add it to a search engine or to some website traffic analytics platform. Since only the domain address owner/administrator can add custom DNS records, the TXT record works as a proof of ownership for the corporation supplying the service. Another popular use for this type of records is the e mail SPF (Sender Policy Framework) security, that helps to ensure that an e-mail address shall not be spoofed and that people will not get spam from allegedly your mailbox. The TXT record includes information about the mail server where your electronic messages come from and functions as verification that it's a reliable one. As there are no standards about the content of this kind of a record, you can add any other info also.