Subject: Invitation to Appear as a Guest Speaker at [Event Name] Dear [Guest Speaker's Name], I hope this email finds you in good health and high spirits. I am writing to extend a formal invitation to you to appear as a guest speaker at our upcoming [Event Name] in Oklahoma. We have heard of your exceptional expertise and impactful contributions in [relevant field], and we strongly believe that your insights would greatly enrich our event. The [Event Name] is scheduled to take place on [Date] at [Venue] in the bustling city of Oklahoma City. This event aims to bring together professionals, industry leaders, and enthusiasts from various backgrounds who share a passion for [related topic]. By featuring esteemed guest speakers like yourself, we strive to create a vibrant platform for inspiration, knowledge exchange, and networking opportunities. Your expertise in [relevant field] aligns perfectly with the theme and goal of our event. We would highly appreciate if you could deliver a keynote address on [specific topic], sharing your invaluable knowledge and insights. The approximate duration of your speech should be around [duration] minutes. In addition to your speech, we would also like to extend an invitation for you to participate in a panel discussion alongside other industry leaders. This will provide attendees with an even deeper understanding of the challenges, opportunities, and latest developments in [relevant field]. We are offering an honorarium of [amount/compensation details] for your time and efforts invested in preparing for and delivering the speech. Moreover, your travel expenses and accommodation will be fully covered by our organizing committee. We believe that your presence as a guest speaker will add immense value to our event, inspire our attendees, and create an unforgettable experience. Your acceptance of this invitation would be highly appreciated and will be an honor for us. Please find attached a detailed agenda and further information about the event. Should you have any questions or require additional information, please do not hesitate to contact me via email or phone. Once again, we express our sincere admiration for your contributions in [relevant field] and we eagerly anticipate your positive response to this invitation. We hope you will join us in making the [Event Name] a resounding success. Thank you for considering our invitation, and we look forward to hearing from you soon. Warm regards, [Your Name] [Event Coordinator] [Organization Name/Event Name] [Contact Information] [Date]