A TXT record is text in free, human-readable form, that's 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 web site to a search engine or to an analytics platform, that offers info about the traffic to your web site. Setting up such a record functions as confirmation that you are the domain owner and they'll provide the content that you need to include as the value when you set up the record. Another purpose of a TXT record is to verify that an e-mail message is sent by the domain address owner and from a reliable hosting server - this is the so-called SPF security, which helps prevent any electronic address set up under your domain name to be forged and unauthorized individuals to send out junk mail making it look like it was mailed from your own mailbox. You may include any other information that you'd like to be associated with your domain address in a TXT record as well.