Link to start a topic with a pre-filled attachment file

I have seen this feature:

Which is great, but I wonder if it’s possible to also add an attachment automatically?
What I want to do is replace a “send by e-mail” feature to send a file.

For example, I have a support app that current uses can send log files to our support e-mail. I would just launch a system URL that will open a new e-mail dialog in the default e-mail app, with the subject, to email, and also the attachment included.

I’d like to “migrate” to Discourse, so users send their log files to a Discourse topic. But I’d like the attachment to be included automatically. Is this possible?