Upload-only folder for collaborators?

I work for a small non-profit that frequently receives photo submissions from volunteers. We recently moved to Creative Cloud for all our media files and are using Bridge to organize accross accounts.

Is there a way to share a folder as upload-only, so that collaborators can submit photos directly, but without us giving them full edit access?

Our short-term solution is to create a new folder for each volunteer, but I'm curious if there is a more elegant/scalable solution.

Thanks in advance for any ideas!