Examples disclosed herein provide methods and systems for the authentication of a print request. As an example, an email service associated with an enterprise network may receive an electronic message having a destination address indicative of a request to print data included in the message, wherein the destination address may have a domain name associated with the enterprise network. The email service may access an authentication service associated with the enterprise network to determine whether a sender address of the electronic message is a valid address to submit print jobs. Upon determining the sender address is a valid address, the email service may forward the electronic message to a cloud print service to prepare the print job comprising the data included in the message for printing.