The transition from World Wide Web site to Web site to website as a single uncapitalized word mirrors the development of other technological expressions which have tended to take unhyphenated forms as they become more familiar. Thus email is gaining ground over the forms E-mail and e-mail, especially in texts that are more technologically oriented. Similarly, there is an increasing preference for closed forms like homepage, online, and printout.
email, e-mail, E-mail
This Grammar.com article is about email, e-mail, E-mail — enjoy your reading!
Ed Good — Grammar Tips