Increasing the relevance of digest emails to group members

The disclosed embodiments provide a system that facilitates access to content associated with a group. During operation, the system provides, to a first user in the group, a digest email comprising a set of links to the content. Next, the system increases a relevance of the digest email to the first user by selecting a subject header for the digest email based on usage patterns associated with at least one of the first user and one or more other users related to the first user.