Hello Javier.

it might be a problem of Outlook, as I can send HTML messages through MAPI with no problems using Eudora 5.1 as the MAPI server.

First of all, MAPI does not use an e-mail server. It uses whatever MAPI compliant e-mail client is installed on the local machine < s >.

I have a form with and edit box with the HTML code inside it. You can modify the message and when finished, just click on the "send" button which fires the following code:

I can see from the code that you posted that you are using simple MAPI. It is very surprising to me that it works for you because this (from the MSDN library) says that it shouldn't:

A client application can send or receive a message that includes formatted text and attachments. Clients that want to work with formatted text must use the MAPI client interface. CMC, Simple MAPI, and the CDOLibrary do not support formatted text in messages.