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. Our Guest Speaker Invitation Form template makes it a breeze!Begin with a Polite Greeting. Your invitation should be a formal email (or letter). Outline the reasons why you've chosen them as the best person to speak at your event. We've reached the end of the season of Epiphany. This Sunday will be our final celebration in church before Lent begins. We have curated 15 different templates for invitation letters that can help you write invitation letters with ease. Register at the JPORTAL website and complete your juror questionnaire. You can sign up for text or email notifications or request an excusal or deferral.