By e-mail

Write a concise e-mail to I tend to respond within 24 hours.

Note that all mail containing executables and archives are automatically filtered and will not reach my mbox. I use a VERY strict spam filter. If you expect a response from me but you’re not getting it, your initial mail probably didn’t pass my filters. Resending mail is not going to help. Lots of senders, notably the ones claiming they have my password and have seen me do things you wouldn’t tell your friends, get special treatment. I’m a big fan of spamassassin and enjoy tweaking my filters.

If you want to contact me on issues not related to work, please let me know and I will give you a separate e-mail address to use.

By phone

You can try to phone me at: +31 (0)53 489 8031. Incoming calls are redirected to one of our secretaries. There is also voicemail.

By making an appointment

Don’t ask when I’m available: I have lost almost complete control over my calendar. The best thing to do is to contact Miranda Davidson.

Snail mail

Maarten van Steen
Digital Society Institute
University of Twente
P.O. Box 217
7500 AE Enschede


University Campus
Zilverling building
room 1060 (ground floor)
Drienerlolaan 5
7522 NB Enschede

Please follow these instructions to getting to the University Campus.