File attachments

Support → Settings → General Settings → File Attachments

Attachment max file size(MB)

You can set the maximum size of a file that can be attached to the ticket.

Allowed File Extension

Enter all possible file extensions that you want to allow for attachments.

Download Behaviour 

You can choose the attached file viewing behavior.

1. Try opening in the browser: If set, it will ask the browser to open a file in a new tab. If the browser does not support the file, it will download it.
2. Download: If set, it will directly download the file.