The name and address of the recipient should be centered on the envelope. Make sure the address begins far enough down on the face of the envelope so that it will not be covered by the cancellation.
If you are using envelopes with windows, make sure the address appears clearly through the window.
An "Attention Line" for routing normally appears on the main address, but if there is a space limitation, it may appear in the lower left hand corner of the envelope.
Addresses on envelopes are normally single-spaced.
Example:
Miss Abigail Beecher
Department of History
Klondike Regional High School
Dawson, Yukon EFG 123 Canada
With Attention Line:
Department of History
Attention: Miss Abigail Beecher
Klondike Regional High School
Dawson, Yukon EFG 123 Canada