Either, "Yes, I'd be delighted. Thank you so much for inviting me" or "No, I'm sorry.Hi (Recipient's name), Thank you for inviting me to the (meeting title). We'll walk you through the key elements to include in your meeting invitation reply email and offer formatting tips to ensure you make a lasting impression. Express your gratitude for the invitation, confirm your attendance or decline with a genuine reason, and provide any necessary information requested. Sample letter to accept an invitation. Let me take this opportunity to thank you for inviting us to the grand opening of your new retail store. 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.