TXT is a DNS record, which contains info in human-readable form for external sources to get info about a specific domain name or subdomain. In the most common scenario, such a record is used to prove that you own a domain in case you are trying to add it to an online search engine or to some web traffic analytics platform. Considering that just the domain address owner/administrator may add custom DNS records, the TXT record works as a proof of ownership for the corporation providing the service. Another popular use for this sort of records is the e-mail SPF (Sender Policy Framework) security, that helps to ensure that an e-mail address will not be spoofed and that individuals will not receive spam from allegedly your mailbox. The TXT record contains information about the mail server where your online messages arrive from and functions as proof that it is a dependable one. Because there are no restrictions concerning the content of this kind of a record, you could add any other info as well.