Notify sharer (or customizable addresses) when files are uploaded in a "file request" (="upload folder") share

[nursoda]

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Is your feature request related to a problem? Please describe. We use "file request" shares (aka known as "upload folders" or "drop folders") a lot, in different places of the file tree, and for multiple users (and pseudo-system-sharer-users), for a lot of purposes. The common issue with this approach where files right fall into place and ease workflows is that one an external user drops a file via the public link/page, the sharer isn't notified. We currently "solve" this by adding a note telling people to also drop us a note via email or messenger.

Describe the solution you'd like This necessity for the user uploading a file to drop us a note is awkward and should be gracefully handled by Nextcloud. The easiest way to implement it would be to add an option "Inform sharer upon uploads" (only available one that user has an email address set) and use that address to inform upon successful (and unsuccessful?) upload (attempts).

Describe alternatives you've considered Such notifications wight also be configured in the activity app, especially for "file request" shares. There are use cases where it would be nice if one could add multiple email addresses independent of the sharer's default address. Not sure where a good place would be to let sharer's enter such addresses.

[nursoda]

In case someone else stumbles upon this: This is already available as notification, at least in NC30 (I don't see it in NC28):