We'll detail everything you need to know about how to invite a guest speaker, from the earliest planning stages to drafting a formal speaker invitation letter. We created three free templates you can use as a starting point.You should include the name of the host, formal expression, the event purpose, date, time, and venue, contact details, and RSVP. 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. He has delivered more than 100 invited presentations in the international conferences. Please fill out the following form in its entirety. We will review your request and follow up with you as soon as possible. Ready to invite an awesome guest speaker to your event? Our Guest Speaker Invitation Form template makes it a breeze! Information About the Addressee and the Sender .