I have seen many people misuse the polite title คุณ [kun]. When I write emails, I use the greeting “sawatdee ka Kun…”. Many times people wrote me or replied my email refer to themselves “Kun…” as well.
I would like to clarify this misunderstanding.
The word คุณ [kun] is put before first names or nicknames when refer to others, or when it is used as second or third person pronouns. It is used to address both males and females of similar or higher status in formal situation.
For example; Mr. Totsapol Thaitrong and Mrs. Suchanun Thaitrong will be known as Kun Totsapol and Kun Suchanun.
Don’t use คุณ [kun] before your own name when you refer to yourself na ka:))
Feel free to let me know if you have any questions.