How To Correctly Write An Address In A Letter . Their phone number and/or email address. First, as the sender, type your full name and address aligned to the left side, just as you would when addressing an envelope. How To Write Letter Address On Envelope template resume from templateresumeword.blogspot.com On the final line, you can write their bpfo number. The address should appear under the sender’s name and should be aligned to the left. Your city, state and zip code.