GROUP OPT-IN LINKS

Techniques for sharing of items from online storage (e.g., cloud storage) are described herein. In some embodiments, sharing links can be configured as group opt-in links designed to provide recipients with an option to join a group having permissions on a corresponding shared item. A sharing link to an item may be generated and provided to a user for distribution to recipients in various ways. When selected by recipients, the sharing link causes an option to be exposed to the recipients to opt-in to a group having permissions on a corresponding item. Group membership is determined by recipients that exercise the option and recipients that opt-in are granted permissions on the item established for the group. Subsequently, an owner of the item/group may view a list of recipients who have opted-in as members and manage corresponding permissions on an individual basis.