Opt-out of Agreement to Arbitrate. You can decline this agreement to arbitrate by clicking here and submitting the opt-out form within 30 days of first accepting these Terms.

Which links to https://www.dropbox.com/arbitration_optout

While many companies also include an opt-out provision on arbitration — typically between 30 and 45 days — few consumers take advantage of it because they do not realize they have signed a clause to begin with, or do not understand its consequences, according to interviews with lawyers and plaintiffs.