You can either choose to fill in the blanks on the template (it can be filled in online) or create your own letter using the template as a guide. Note: This is a sample only.The letter must be typed on department letterhead. Discover 20 professional and general invitation letter examples, perfect for events like job interviews, networking, parties, and more. Information on Individual in the U.S.. Name. Former Name, if any. What should the letter say? Edit, sign, and share SAMPLE INVITATION LETTER FOR YOUR FAMILY AND online. Visa Letters of invitation are addressed to the individual who wishes to attend the event. I am writing this letter to inform you about the upcoming__( mention the occasion or the event) It has been a while since we all have met up.