There are many ways to end an email message. The way you choose to close your message should reflect the receiver as well as the content. For example, it would be in poor form to send a serious work proposal to a potential new client and end with "Catch Ya' Later." Chances are you won't be catching their account. If you're looking for some email salutations besides 'sincerely' check out
. http://resourcesforwriters.suite101.com/article.cfm/list_of_letter_closings_and_salutations.