Friendly remind.

.

Pursuant to my email dated 26 April, I would like to give all of you a friendly reminder to submit the requested document to me by today.

Your co-operation is highly appreciated.
.

Pursuant to my email dated 26 April with subject "exchange money", I would like to give all of you a friendly reminder to submit the requested document to me by today.

Kindly advise if we added "with subject "echange money"".

.
Pursuant to my email dated 26 April on the subject of exchanging money, I would like to give all of you a friendly reminder to submit the requested document to me by today.
.

Dear Mister Micawber

Are "pursuant to my email" and "subsequent to my email" synonymous? And what about "following my email"?

Many thanks,

Tom

.
No and no. It is a fixed phrase.
.

Dear Mister Micawber,

Which one consider more frequent for business use?

a) Regarding your email dated 26 april on the subject of exchanging money?

b) Subsequent to your email dated 26 april on the subject of exchanging money?

c) Following your email dated 26 april on the subject of exchanging money?

can you advise me and explain 3 example above?

.
Only A is standard bizspeak-- the other two sound non-native in this usage.
.

In biz english environment, what word can replace "friendly reminder" and can have same meaning?

.
I can't think of any; it is a standard phrase. Business English is particularly full of set phrases; if you try to replace them, the effect is often odd and unbusinesslike.
.

One more question, MM.

How do you find "subsequent to your email regarding the AC repair...", ?

Do you find the structure non-native or unnatural?

Thanks in advance,

Tom