How to open Gwibber iconified?

So, this is my problem: I've written a very simple script to run my four most used internet-based applications with just a click. It includes 'emesene', 'liferea', 'gmail-notify' and 'gwibber'. I'd like all of them to open iconified (minimized to tray). 'emesene' does it with "-m" and 'liferea' with "--mainwindow-state=iconified". 'gmail-notify' is a tray app, so there's no need to add stuff to it.

But, Gwibber has no know command that can be used to start it minimized. I was wondering if there's any way I can "force" the minimizing order, kind of like replacing having to click the minimize button.

Thanks.

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My script looks like this:
#internet apps
#open 'emesene'
emesene -m &
#open 'gwibber'
gwibber &
#open 'liferea'
liferea --mainwindow-state=iconified &
#open 'gmail-notify'
gmail-notify &