How to delete attachments
This article describes how to delete attachments that are stored within a group's "Attachments" section.
To delete attachments, they need to be deleted from the Attachments section, either by deleting the folder with the attachments in question (which will delete all the attachments that came with a given message) or by clicking into the folder and deleting only specific files or photos rather than all of them.
To delete files or folders, check the box next to the file or folder names you wanted deleted and then click Delete.
Note: If you delete a message in the message archive, it does NOT automatically delete the associated attachments in the Attachments section. These must be deleted separately.