There is no easy way for such case, as their support system metric is kept private. We know they are understaffed, I seen some stats there (600 unhandled CM escalations), but at which speed they can recover the support mailbox and to be pro-active is another question we can't answer.
To share an experience I got no email answer too, two-times.
In my case it was un-easy question, but in my case it was for a topic related to moderation. (no need to answer them now if a CM read that answer, as it's outdated anyway now)
I got faster answer, like shadow wrote from posting here, or by using the chat when a CM is present or by using twitter directly.
IMO the topic you ask might greatly impact the answer time, if they would need to develop or take a lot of time to answer you, they might try to empty their support bin before, as they have no ETA to respect, but they might want to clear the most tickets before touching bigger problem, which for me would seem natural in such case.