It seems like you have two categories of
1) Modifying (edit & delete)
2) Saving (Save for later & email when available)
As for the order I do not think it matter much if you do two things: reflect the above through graphics and consistency.
I would graphically group "edit" and "Delete" and have the saving category appear as another group. This can be as simple as a line or is could be a different color. Or maybe the save has an icon and edit and delete do not. Hopefully you get the idea.
It is likely that your user will encounter both states. So they should be predictable. Your Modify category should always be in the same place and your Saving category should always be in the same place.
Now an example
Good Consistency: (edit, delete, save for later) & (edit, delete, email me when available)
* the order stays like this (Modify, modify, save)
Bad Consistency: (edit, delete, save for later) & (email me when available, edit, delete)
* the order changes (Modify, modify, save) to (Save, Modify, modify)