When re-installing the app it asks if I want to install the Pocket Outlook Plugin. Anyone know what this plugin does? I sync with Outlook but didnt know if this offers some sort of integration rather then replacement and what I lose or gain by not using it.

Its not a plugin just tab on the screen. What the screen does is show a gold envelope when there is new message and allows you to view the entire message from the diary screen. You can turn it on/off in options

Gotcha, thx!