You can configure your folders to provide varying levels of access to other users according to the types of tasks those users need to perform within the folders. For example, you might grant access to your Contacts folder to allow others to see and use your contacts list.
Granting permissions for folders is different from granting delegate access. Users with delegate access to your folders can send messages on your behalf, as explained in earlier sections. Users with access permissions for your folders do not have that ability. Use access permissions for your folders when you want to grant others certain levels of access to your folders but not the ability to send messages on your behalf.