Dear All,
I wanted to take a moment to let you know that I have to leave my position at ...., which will be effective on 17th of December 2014. By the way, this is my last day in the office which means it is time to say farewell to all of you.
I have enjoyed my tenure here and I appreciate having had the opportunity to work with you. Thank you my boss, my sister, my friend and colleagues that I have to deal with. Thank you for all kind of support and guidance you have provided me during my time at ..
With best wishes to all of you.
Thank you & Best Regards,