How do Google Groups differ from contact groups?

Google Groups provide a unique feature where they create a single email address that can be used for messaging multiple members at once. This format allows for easier communication and collaboration, especially in contexts like project teams or community discussions. When someone sends an email to the Google Group's address, it is forwarded to all members of the group. This differs significantly from contact groups, where each member has their individual email addresses.

Other options touch on functionalities that are either exclusive to different tools or don't apply to the nature of Google Groups, underscoring why the creation of a single email address for group communication stands out as a key differentiator.