Envelope How To Address
Then write the sender s address in the upper top left corner making sure to write in fairly small print so you have plenty of space in the center of the envelope. As a rule of thumb the outer envelope of your wedding invitation should be more formal with titles and full names while the inner envelope is more informal leaving out first names or titles and last names if you re very close to the guest. Use mr ms or mrs followed by the guest s first and last name.