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. Thank you in advance for your assistance.Invitation letters are available to be picked up in the Center for International Programs and Services. On behalf of the XYZ and the XYZ Organizing Committee, we are honored to invite you to speak at the XYZ event celebrating Cybersecurity Career Week (CCW). It can be a little embarrassing but man up and do it! DO talk about financing the speaker beforehand – and DO pay your speaker well. 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.