[Zope] sending SMS messages from Zope application

[Wout Tankink]

Hi zopistas-out-there,

I want to send SMS messages (several hundreds every few weeks) from a Zope 
application.
Do you know of some way to do this?
I prefer not to use a SMS service provider, because of the huge step-in 
costs. So I think about modeming to the SMS gateway of KPN or Vodafone (I 
am dutch), which I can reach by GSM phone number. I want to send several 
messages (the same message to several people) in one call.

Thanks,

Wout Tankink