ImmoMapper is a search engine and doesn't have its own listings. So you can't list a home on ImmoMapper directly.

Here's what you could do instead:

If you are looking for a renter I highly recommend using Naloo's Immomailing to list the home for free especially if it is in or around Zurich.

Otherwise or to list a house or apartment for sale you could use Homegate or ImmoScout24 (both paid listings, biggest reach in Switzerland) or as an alternative with free listings.

Your listing should be picked up by ImmoMapper typically within a few hours although sometimes it might take a day or two.