Hey guys, Which one is correct? 1) you can contact me by email (email address) or by telephone (phone number). 2) you can contact me on email (email address) or on telephone (phone number). 3) you can contact me at email (email address) or at telephone (phone number). That's "write to us ," or in an Internet context "send us an e-mail." " Contact us " links often lead to pages with information for multiple means of contact : telephone numbers, postal addresses, location maps, and perhaps more, aside from that. Hi there, In an email, when you say "if further information is required, pls contact my referee at/on +email address." Which prep is right? You should contact him You should contact to him You should contact with him