What feature of Smartsheet enhances team collaboration?

The feature that enhances team collaboration in Smartsheet is the commenting and attachment options. This functionality allows team members to engage directly within the context of the project, fostering real-time communication and collaboration. Users can leave comments on specific rows or cells, which helps in discussing particular tasks or issues without needing to navigate away from the project sheets. Additionally, team members can attach relevant documents or files directly to specific tasks, ensuring that all necessary resources are easily accessible in one place. This integration of communication and resources significantly improves teamwork and streamlines workflows, enabling teams to stay aligned and informed throughout the project lifecycle.

The other options, while beneficial in their own right, do not directly enhance collaboration in the same impactful way. Role-based access control primarily manages permissions rather than facilitating interaction, email marketing integration serves a different purpose unrelated to project collaboration, and third-party app integration, while useful for broadening functionality, does not inherently improve communication and teamwork within Smartsheet itself.