Dear Ms XX
I have recently received your application for the post of sales manager. I am deeply regretful to inform you that your application is not successful.
However, I'd like you to know that over the years, I am very pleased with your performance as a marketing director, your leadership and interpersonal skill are both sound and especially your insight is a great asset to the company.
Yet the sales manager is a position need extensive experience and great business instinct. At the moment, I have a list of more experienced candidates to consider.
But please keep up the good work, I am sure there will be your chance of promotion once you gain more experience. If you have any question regarding the selection process please do not hesitate to contact me directly. If there is any more management post vacate in the future I will get you posted
Sincerely
Executive XXX