TXT is a DNS record, which contains info in human-readable form for external sources to obtain info about a specific 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 site traffic analytics platform. Considering that just the domain owner/administrator may add custom DNS records, the TXT record works as a verification of ownership for the company providing the service. Another popular use for this sort of records is the email SPF (Sender Policy Framework) security, which ensures that an e-mail address shall not be spoofed and that others will not receive unsolicited mail from allegedly your mailbox. The TXT record includes details about the mail server where your digital messages come from and serves as proof that it's a dependable one. Because there are no restrictions regarding the content of this type of a record, you could add any other info also.