Please kindly

You are correct to say that using "please" and "kindly" together looks clumsy, and in BrE you will not often see it. It is a mistake mainly made by non-native speakers. I think they assume that you can achieve greater politeness by accumulating the words thus.

There is a difference under some circumstances. "Please" used at the beginning of a request is usually interpreted as a polite formula intended to soften what is, in many cases really an instruction or order.

Please bring me the report you wrote.

Please open the window.

However, "kindly" is often much less kind and can have a sarcastic or ironic undertone.

"Kindly get on with your work", said the teacher to the idle boy.

"Kindly stop tapping your fork on the table", my father said one dinnertime.

Many thanks, Contrex, for the detailed explanation.

I have seen it in this context:

Please, kindly respond before Jan. 27.

I still maintain that "please" and "kindly" duplicate each other.

(will you Please) (Be so kind) as to respond before June 15?

That's a different kettle of [Sully]fish!

I think you know very well that Yoong Liat was asking about using phrases where the words "please" and "kindly" immediately follow one another.

Hi Sullyfish

Will you please so kind as to respond before June 15.

This sentence is grammaticlly correct.

As Contrex said, I'm questioning "Please kindly ... " They cannot be used together, IMO.