TXT is a DNS record, containing data in human-readable form for external sources to obtain information regarding a particular domain or subdomain. In the most common situation, this type of record is used to prove that you own a domain if you are trying to add it to an Internet search engine or to some website traffic analytics platform. Due to the fact that just the domain address owner/administrator is able to add custom DNS records, the TXT record functions as a proof of ownership for the company providing the service. Another popular use for this type of records is the e-mail SPF (Sender Policy Framework) protection, which makes sure that a particular email address won't be spoofed and that others will not receive junk e-mail from allegedly your mailbox. The TXT record includes information about the mail server where your online messages originate from and serves as verification that it's a reliable one. Since there are no standards about the content of this kind of a record, you can add any other info as well.