Marcel, you can send HTML messages trough simple MAPI using Eudora as the mail program.
If you can't quit Outlook (I don't know why people is so reluctant to use anything but outlook with all the security problems it involves), I'm afraid you won't be able to use HTML messages with MAPI.

Javier.

>>
>>But I do not understand why you do not just use CdoEx.dll since you are running Win XP. You can very easily send HTML formatted e-mails using it. Just check out the SDK documentation in MSDN for CDO For Windows 2000. It all still applies to CdoEx.dll under Windows XP.
>>
>
>Yes CDO for WIN 2000 is very easy but there are two MAPI functions I cant miss.
>
>1) Preview/Edit the mail before it is send
>2) Having the mail in the Outlook express send items folders .
>
>Tks
>Regards