Del. Code tit. 24 § 2928
Entering a name and email address on an Internet or World Wide Web site is sufficient to establish a broker-consumer relationship for the use of that system, but does not in of itself create a broker-customer or client relationship for any other purpose. The broker may deliver the CIS by the Internet or World Wide Web and the customer may acknowledge receipt of it electronically. However, an exclusive business relationship or obligation for the customer or client to pay any compensation may only be created by a written brokerage agreement signed by the customer or client as a separate document. If the brokerage agreement is signed electronically it may not be part of a general consent to the terms of use of an Internet or World Wide Web site or other electronic device, but must be a conspicuous separate document.
24 Del. C. § 2928