The Mail2Tag system leverages existing practices around enterprise email to move relevant information out from individual inboxes. With Mail2Tag users share information by emailing content to a special email address, such as CC to sometag@share.company.com, where ʻsometag' can be any keyword. The system then adaptively redistributes the information based on profiles inferred from prior user activity in the system. In this way no changes to the email client are required for users to participate

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... n the system and information is routed based on individual need, while the amount of information noise is reduced. We study the Mail2Tag system and its 20-month deployment in an organization as a lens to understand how to measure the adoption for this type of tool for sharing. We assess adoption via quantitative and qualitative measures and identify key factors that facilitate or constrain adoption. Our findings suggest that perceived usefulness is a key facilitator and that people are drawn to different levels of use depending on their social role in the organization. Each level of use is a valuable contribution in itself and should be accounted for when assessing adoption.