>If I send
http://www.mysitename.com to my costumers in text format,
>some costumers complain they can not open it by double clicking it
>
>They have to copy and past it on their browser
>
>I don't need to send pictures to my user
>I only need to send hyperlinks
>
>Is it mandatory sending HTML in my case ?
AFAIK, yes.
--sb--