Open Label with Intent link

I am trying to open my gmail app to a specific label. I found this link to input and it works opening my gmail app

intent:#Intent;launchFlags=0x10000000;component=com.google.android.gm/.ConversationListActivityGmail;end

I have tried putting in extraFlags="email@gmail.com" and extraFlags=label; I have tried it with and without quotes.

Basically the only thing that works is the above link which opens the app only on the last label used. I would like to have it open my 2nd email to the work label.