TXT is a DNS record, containing information in human-readable form for external sources to gain information regarding a certain domain name or subdomain. In the most common scenario, this kind of record is used to prove that you own a domain name if you're trying to add it to an Internet search engine or to some traffic analytics platform. As just the domain owner/administrator may add custom DNS records, the TXT record serves as a verification of ownership for the company supplying the service. Another popular use for this sort of records is the e-mail SPF (Sender Policy Framework) security, that ensures that an email address isn’t spoofed and that individuals will not get spam from allegedly your mailbox. The TXT record includes details about the mail server where your electronic messages originate from and serves as verification that it's a trusted one. As there are no standards concerning the content of such a record, you can add any other info also.