Box, a cloud data storage provider, is offering users 25 gigabytes of free storage as part of a promotion with another tech company.
The promotion lets new users get five times as much storage as the free 5 GB that Box normally offers.
The offer is effective until the end of August. Users will get the additional storage after signing up for HelloSign's new digital document signature service.
The offer also appeared earlier on Box's homepage, meaning some users could sign up with Box and get the 25 GB of storage without also signing up for HelloSign. Box is now trying to fix that though.
A Box spokesman said the company plans to do similar promotions in the future.
SkyDrive, Window's cloud storage service, recently discontinued an offer of 25 GB of storage. Now the service offers 7 GB of storage.