GET 1 GB FREE STORAGE by Linking Mailbox.app to Dropbox
All you need to do is download the Mailbox app on your iOS device and link your Dropbox account. Once you've done that, go to the link above and the bonus will appear in your account."
1. Get dropbox Get Dropbox account
Instructions (requires an iOS device):
1. Install Mailbox app
2. Log into gmail account via Mailbox app
3. Link your Dropbox account
Go to settings in Mailbox.app (at bottom of screen link a Dropbox account.
4. Verify that 1GB was added by logging into your Dropbox account