TXT is a DNS record, which contains data in human-readable form for external sources to gain information about a particular domain or subdomain. In the most common case, this type 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 site traffic analytics platform. Considering that only the domain owner/administrator is able to add custom DNS records, the TXT record works as a verification of ownership for the firm providing the service. Another popular use for this type of records is the email SPF (Sender Policy Framework) protection, that ensures that a particular email address will not be spoofed and that people will not receive junk e-mail from allegedly your mailbox. The TXT record includes details about the mail server where your online messages arrive from and serves as verification that it's a dependable one. As there are no rules about the content of this kind of a record, you can add any other info also.