The letter “M” on a traditional RSVP card can seem confusing, especially to people unfamiliar with older invitation customs. However, its purpose is quite simple. The “M” represents the beginning of a courtesy title that the guest is expected to complete before writing their name.
Traditionally, guests would continue the letter by adding a title such as “Mr.,” “Mrs.,” “Ms.,” or “Miss.” For example, someone might write “Mr. John Smith” or “Ms. Jane Smith.” The letter is therefore not a question or a special instruction, but simply a traditional starting point.
This format comes from older standards of formal invitation etiquette, when using courtesy titles was much more common. Including the first letter allowed guests to complete their preferred title themselves while maintaining the formal appearance of the RSVP card. Modern invitations, however, have become more flexible.
