Generally, the name of the addressee should be included above the address itself.
From the en.wikipedia.org
For the addressee of many of Pliny the Younger's Epistles, see Minucius Macrinus.
From the en.wikipedia.org
When I hit the send button, I immediately realized that I had not chosen an addressee.
From the washingtonpost.com
Letters and packages need labels to identify the addressee and the sender.
From the en.wikipedia.org
The other form is called the exclusive, which is used when the addressee is excluded.
From the en.wikipedia.org
All packages were scanned at various checkpoints then sent up to the proper addressee.
From the en.wikipedia.org
In Flaubert's unforgettable correspondence, the addressee problem can best be observed.
From the guardian.co.uk
The act of interpreting the message by the addressee is called decoding.
From the en.wikipedia.org
The Economist online is not the correct addressee for such complains.
From the economist.com
More examples
One to whom something is addressed
In linguistics, an addressee is an intended direct recipient of the speaker's communication. A listener is either an addressee or a bystander.
The person or organization to which something, such as a letter or message, is addressed, for whom the item is intended
An addressee is a person who receives a sentence, i.e. a listener or a reader. In English, an addressee is referred to with the second-person pronouns such as you.