The details in the letter are important. If you miss out on some of the details, the invitee may not be given permission to enter and participate in the event. . Letterhead Write the invitation with your organizations or academic institutions letterhead . Date Place the date the letter was written, and See more. There are different types of invitation letters, and for the most part, they are designed for specific situations. For example, an invitation to a wedding does not read like one for See more. This is written when you have an occasion like birthdays, baby showers and weddings, and want those to attend to have the exact details, i.e. the location, time, dress code and what else is required. Whether See more. When planning to visit a foreign country, your host country needs to know that you have a place to stay and you will not be stranded. If you are making arrangements to visit a friend or See more. An invitation letter for a meeting is written when you want to alert staff members, employees or ev