Dropbox Lifetime SpaceReferral Services
Upgrade your existing account up to 18GB
Upgrade your existing account through referrals, each referral adds 500 MB to your account and you can get up to 16GB (initial 2GB + 16GB bonus = Total 18GB).
You need to send us your referral link to upgrade your existing account.
Upgrading will take around 1 to 2 days. we will gradually process it. during this time you can still use your account as normal as usual.
Referrals can get you a maximum 16 GB extra storage. In case you've already referred some friends, my service will fill up your extra storage to the 16GB limit.
Note that it's not "increase 18GB" but "Increase to 18GB"