b2evolution version 5.0.3-beta-5

I am play with post by email in my blog and it's work fine (and via android app to wordpress work fine too)

But I have one last question :-)

Is there a parameter to private or draft post?

I know that there is <category>#category</category>, <blog>#blog</blog>. I try <status>0</status> but don't work.

Where I find a list this parameter?

Thanks so much for any help!