Disable Email file attachment

Hi, I have a concern regarding multiple files upload. I just wanted to upload files in my server and send only an acknowledgement email along with it, but the email comes with the file attachments and I don’t need it to be included. How can I disable the attaching of files with the email?

Things I’ve done trying:
I tried unchecking “Send Attachment as links”
I double checked my email-setup which didn’t include any file tags/shortcodes for file