我即将调岗，现在的工作将由新来的同事接手，现在想发一封英文邮件通知各个客户，请问如何写？

Thank you very much
for the great partnership during all the years. I have enjoyed to work with
名字 very much.
I would like to
inform you that I will be transferred to the new postion from 时间。。。

Thank you very much
for your friendship and your continous supports.
I really appreciate to have been able to work with you over the years.

I will handle over
my position to my
colleague 名字。。。
Should you need any information or help, Pls feel free to contact with me. I will be standing by all the time for you!

Dear Valued Customer ，I will leave my department and a new workmate will take over my job,if you have something pls contact him,thanks.