I want to send an e-mail from my ASP-page but the object CDONTS.NewMail isn't supported by ChiliASP. Someone who can tell me which serverobject is supported?

Tell Chilisoft you have the RAQ and ask for the spice pack for it - they should give it (or a cut down version) free of charge will will allow CDONTS...

..windows specific. I doubt it come with chili soft.

Spice pack is a Chilisoft add on that has emulation for CDONTS (same syntax etc...)