Formal Letter to SE about RMT situation.

[Nadirah]

That's actually normal, because they don't want their customer service staff to accidentally open up malware attachments.

All the call centers I've worked for, the attachments are usually stripped from emails.

That said, they could just change the reporting mechanic so that it creates a screenshot, or records a 10 second video to upload when the report function is triggered. The game client already has the ability to create a screenshot.

Blizzard accepts attachments to their hacks@blizzard.com cheat report email.

[Callence]

Blizzard accepts attachments to their hacks@blizzard.com cheat report email.

There are some companies that do not allow attachments, such as banks and credit card companies for example. However Blizzard and NCSoft take attachments (Although unless its GW or GW2, NCSoft LOL's and trashes it) when you report cheating. SE should be able to do the same - minus the whole trashing and laughing part.
Faster investigation, So they can slap the proper codes to deal with it.
those codes such as a 213, 310, 457 and 3613. Take notes SE: https://www.youtube.com/watch?v=ZlM8rkefgoA