Annually, MyEmma gives away 25 free accounts to deserving nonprofits nominated by users. While the nomination is currently closed for this year, make sure to look out for when they're re-opened. No doubt, this will be announced on their blog.
Additionally, they plant 5 trees for every new account they bring in, which totalled 1,700 freshly-planted trees in January.
While we haven't personally tried their email service, we congratulate them on doing some good for this world.
MyEmma isn't the only for-profit company in the nonprofit sector pitching-in to make the planet a better place (ahem, Care2), but we're going to start highlighting a few other companies that are doing their part (especially when your nonprofit can get free stuff).