best way to contact a casual publisher?

I was wondering what the best way is to contact some publishers. I know that there are a lot of portals to make deals with such as Gamehouse, Bigfishgames, Oberon… Should I contact them all and pick one of them at the end. Or only contact 1 and hope he does the deals with the other portals?

Sales is a new environment for me.

Contact any and all publishers. All at once. Multiple offers from different publishers gives you a bargaining chip, and could set off a price war.

Don’t stop trying to secure the best deal for yourself until you actually sign a deal.

Are you talking about an online game (webplayer) or a standalone? And what type of game?

There is only a handfull of places that take unity webgames.

If you are talking about a standalone game it depends on the kind of game you are making. For example an action racegame won’t do well on any of the casual portals like gamehouse.