A TXT record is text in free, human-readable form, that is associated with a domain address as a DNS record for one purpose or other. The most popular use of a TXT record is to add your site to a search engine or to an analytics platform, that provides information about the web traffic to your website. Setting up this type of a record works as confirmation that you are the domain address owner and they'll supply the content you should include as the value when you set up the record. Another purpose of a TXT record is to validate that an email message is sent by the domain owner and from a reliable hosting server - this is the so-called SPF security, that prevents any electronic address created under your domain to be forged and unauthorized people to send out unsolicited mail making it look like it was sent from your own mailbox. You may include any other info that you would like to be associated with your domain in a TXT record as well.