Appreciative Resignation Letter

Dear [Manager],

It is with mix feelings that I write to you this letter. I was lucky to be able to work with you and your wonderful team for the past [some number] years; and even though we had our ups and downs I will always be grateful for the opportunity to be part of this wonderful organization. Regretfully I will not be able to do so anymore. I hereby kindly ask you to accept my resignation from [company name] effective [some date]. [You may want to mention the reason to your decision as well.]

I have gained so much of experience and I've learned a lot. I appreciate and cherish every moment I spent here and truly wish I could stay longer, but I'm confident that you will understand the reasons leading to my decision.

I wish to you and to your team the best of luck and success in the future. Though I won't physically be with you, but my heart will always be.

Best Regards