Choose the correct envelope size and type for your letter
Write the recipient’s name and address on the front of the envelope
Include the apartment/suite/unit number if applicable
Use the correct city, state/province, and ZIP/postal code
Add the return address in the top-left corner of the envelope
Seal the envelope securely
Add the correct postage stamp(s) in the top-right corner
Place any required documents or enclosures inside the envelope
If using a mail service that requires it, add tracking or delivery confirmation
Drop the letter in a USPS/your local postal service mailbox or take it to a post office
Keep the receipt or tracking number if you used tracking or paid for extra services