Recipient sees no letters like Ä,Ö,Ü

[nuckel]

Hi, have a question concerning with german "umlaut" (letters like Ä,ä,Ö,ö,Ü,ü, and ß
(look at this http://en.wikipedia.org/wiki/Umlaut to understand what i mean)
Problem is:
If i send an eCard that contains i.e. the text "...bla...Glückwunsch..."
the recipient gets only "...bla...Gl ckwunsch..." - the letter ü is not shown.
If clicking on the "link-to-the-eCard-on-the-server" the text is OK, the ü is shown...   
So - sending an eCard in german language results in an incomplete message which is pretty much
embarassing for the sender (who actually is not responsible for that 'bug')
I hope you get the point...

In the options i choose UTF-8 for charset and "default language-file".
Or should i use iso-8859-1? Don't know if that's right or if that makes a difference at all?

Does anyone has a solution for that? 

Thank you!

[Joachim Müller]

this is indeed related to what type of encoding you have chosen for your site - there's a big difference between UTF-8 and ISO-8859-1. Although UTF-8 is recommended as it will be the future technology, it will not work for all, particularly if there is one weak point in the whole queue, e.g. an email prgram that is not capable of displaying unicode messages, or a user who doesn't know how to enable auto-encoding in his browser. Bottom line is: if your site is being used only by people who speak German, switch to ISO-8859-1. Post a link to your site for details, along with a non-admin test user account that has the privilege to send ecards.

[nuckel]

GauGau,
You're right on the stuff that deals with charsets.
Well, i got a hint in another board and that seems to be the reason for the not-displayed-german-letters: emailclient MS Outlook. 
Tested it that way:
coppermine 1.3.0 sends an eCard to MS Outlook (version office XP) - outlook shows no Ö,Ä,Ü.ß in the text ...
sent the same eCard to a Web-freemail service - the eCard was shown correctly.

I think i have to take a look at Outlook next ... I always hated that prog.

Anyway - Thanks Again for your help and Have a nice day!