TXT is a DNS record, that contains info in human-readable form for external sources to gain information about a specific domain or subdomain. In the most common scenario, this type of record is employed 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 only the domain address owner/administrator is able to add custom DNS records, the TXT record serves as a proof of ownership for the business providing the service. Another popular use for this kind of records is the e-mail SPF (Sender Policy Framework) protection, which helps to ensure that an email address shall not be spoofed and that others will not get unsolicited mail from allegedly your mailbox. The TXT record contains information about the mail server where your electronic messages come from and serves as validation that it's a trusted one. Because there are no restrictions regarding the content of this type of a record, you can include any other info as well.