How much free referral space can I earn?
Each friend you refer to Dropbox yields 500 MB of free space for Dropbox Basic accounts or 1 GB for Dropbox Pro accounts.
In total, Dropbox Basic accounts can earn up to 16 GB through referrals and Dropbox Pro accounts can earn up to 32 GB through referrals.
To get started, simply invite your friends to Dropbox from the referrals page. Both you and your referral will receive bonus space if your referral completes these steps: