Here you can read about the ways I'm working on making my business more sustainable, especially regarding the packaging of products :)
Greeting cards come with a 100% recycled envelope made from 100% post consumer waste (um, how cool). They are made in the EU and are chlorine free.
The protective "plastic" bags that you'll see around the cards are actually not plastic! They are made in the UK from clear compostable vegetable starch - renewable PLA derived from corn / potato starch. They are fully biodegradable and compostable, breaking down to CO2, H2O and biomass (compost), which can then be reused in the eco system to make new plants.
They should be disposed of in a home or commercial composting system, but if they end up in a landfill they will still break down to CO2 and water. In a commercial composting the temperature will be higher and the process is much quicker. In a colder home composter it will just take longer.