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Does anyone have an idea how to send email notification to the user when the file is uploaded?
This file can be uploaded either to the new node or while modifying an existing node.
I know you mentioned that you can't use Rules, but I think you can.
In your condition, just add your file field and set it to "Data value is empty" and negate it.
Sorry but I did not put the description. The website which is drupal 7 has media module installed. I want the notification to launch whenever a file is uploaded in the media manager before it is attached to a node.
Required, but never shown