Type in all uppercase characters, if appropriate. You might want to include a notation on private correspondence, such as a resignation letter. Include the same on the envelope. Examples are
PERSONAL
CONFIDENTIAL
RECIPIENT'S ADDRESS / Inside Address
The inside address is the recipients address. It is typed as it will appear on the envelope, three to eight lines below the last component you typed. Four lines are standard. It should be left justified, no matter which format you are using. If you dont know the name of the reader or type an Attention Line, skip the person's name here.
It is always best to write to a specific individual at the firm to which you are writing. If you do not have the persons name, do some research by calling the company or speaking with employees from the company. Include a personal title such as Mr., Ms., or Dr. If there is a possibility that the person to whom you are writing is a Dr. or has some other title, use that title. Usually, people will not mind being addressed by a higher title than they actually possess.
To write the address, use the Post Office Format. For international addresses, type the name of the country in all-capital letters on the last line.
Mr /Ms / Dr + recipients name
recipients position (if known)
company name
house number, street
place
area code
COUNTRY (in capital letters)
In British English, the recipient's address may start on the same line as the date or one line below the date. The area code is usually at line after the place.
In American English, the recipient's address starts two lines below the sender's address (or two lines below the date if the sender's address isn't placed in the top left corner). The area code is usually at the same level as the place, separated by a comma.
