Thanks! I'm glad people are liking it.
Eventually there will be popups for the import/export windows.
For import you can paste in any text. Each line becomes a category or item depending on whether it starts with whitespace or not.  Any items left justified will go in as a category, and any that begin with whitespace will be items under the previous category, for example:
- Code: Select all
 Category1
   Item1
   Item 2
Category Number 2
Category3
   Item 3
   Item 4
Any amount or type of whitespace to begin a line will trigger it to be treated like an item (tabs or spaces).
Export works exactly opposite, and will dump the results into a blank email so you can send it wherever you want (including yourself).
Hope this helps, let me know if there's some other functionality that would make it more useful. I imagine I'll hide these in the settings screen for the real release.
-Marcus