Mail, Omnifocus and Mail Act-On
 

After a lot of searching, and getting nowhere, I have finally found a very easy way to trigger "OF: Send to my inbox" using Mail Act-On.

I wanted to have a rule to flag a message, and send it to OF at the same time. The OF script was not working (I put it in the new com.apple.mail folder, etc). I reviewed the OF and MAO forums and couldn't find an easy answer (I am not an applescript expert).
I decided to create my own script to trigger for the Omnifocus Service. I couldn't find a way to trigger services from applescript (again I know almost nothing about this topic), but I found that you can simulate keystrokes. I used my "Clippings Shortcut" in this very short script:
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tell application "System Events"
key code 124 using {command down, option down}
end tell
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Added this applescript as the next item in MAO rule and... back to productivity.

Hope this helps someone else.