Dear [Recipient's Name], I am writing this letter to sincerely apologize for missing our scheduled appointment on [Date] at [Time]. I understand that my absence may have caused inconveniences and disruptions to your schedule, and for this, I deeply regret and apologize. [Describe the reason for missing the appointment briefly, but avoid providing unnecessary details or excuses.] Unfortunately, due to unforeseen circumstances beyond my control, I was unable to make it to our meeting as planned. I understand that this reflects poorly on my professionalism, and I assure you that it was an isolated incident that does not reflect my commitment to fulfilling my responsibilities. As a responsible and dedicated individual, I understand the importance of honoring commitments and the value of your time. I take full responsibility for my actions and the impact they may have had on you or your team. Please be assured that I deeply regret any inconvenience or disappointment my absence may have caused. To make it up to you and to express my sincere apologies, I would like to propose a new meeting time that is convenient for both of us. Please let me know the most suitable option for you, and I will gladly accommodate your schedule. I assure you that this time, I will make it a priority to attend the meeting without any setbacks. Once again, I sincerely apologize for missing our appointment, and I hope you can understand and accept my apology. I genuinely value our professional relationship and the opportunity to work together. I look forward to rescheduling our meeting and making it a success. Thank you for your understanding and patience in this matter. Should you have any questions or concerns, please do not hesitate to contact me directly. Best regards, [Your Name] [Your Title/Position] [Your Contact Information]