TXT is a DNS record, that contains info in human-readable form for external sources to obtain information regarding a certain domain or subdomain. In the most common situation, this type of record is used to prove that you own a domain if you're trying to add it to an online search engine or to some website traffic analytics platform. As just the domain name owner/administrator is able to add custom DNS records, the TXT record works as a proof of ownership for the firm supplying the service. Another popular use for this kind of records is the e-mail SPF (Sender Policy Framework) protection, that helps to ensure that a particular email address will not be spoofed and that people will not get unsolicited mail from allegedly your mailbox. The TXT record includes details about the mail server where your online messages originate from and functions as proof that it's a trusted one. Because there are no standards about the content of this sort of a record, you can include any other information as well.