A signature is nothing more than some sort of generic sign-off message that has an email address embedded within it. A few stock wording choices—in popular flavors—are
Inviting— Comments? Questions? Email me at firstname.lastname@example.org.
Formal— If you have any comments or questions regarding this page, contact email@example.com.
Efficient— Feedback: firstname.lastname@example.org.
Traditionally, the paragraph containing the signature uses the Address property, although that is not required.
What is required is a mailto link—a link that, when clicked, opens the visitor's email program and starts a new message, preaddressed to an email address specified in the link. Mailto links let you provide your visitors with ...