MyBB Community Forums

why not make a distinction between "view attachments" and "download attachments"
if do that the attached pictures can show to some group then the attached files like rar file can't download by them
just like the strong forum software Discuz!(www.discus.net)
the forum can set that some group view attachments while download it with points

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i want to get that guests can see attached pictures while can't download attached rar or zip files
of course i can set attached picture as thumbnail,but they won't be shown if the picture's size is less then the Thumbnail Maximum Size

If you deny guests the ability to download attachments, they should be able to see the thumbnail, then when they click it will ask to login.

For points to download, there is a plugin (MyDownloads?) that can do that.