That is a terrible hack of a workaround and you know it :)

With Google Inbox (inbox.google.com) I can Snooze an email for [x] number of days and it'll be gone from my inbox and I don't have to think about it until it comes back. I use Inbox for personal email but I'd rather not be.

Airmail doesn't have a web client, and that's where most of my emailing takes place, so unfortunately it's not an option.

We use FrontApp on top of FastMail for customer service, it provides a bunch of useful features on top of email, such as the one I just mentioned. I could use it for my personal email but that would mean paying two monthly subscriptions. Plus it doesn't have spam filtering built in.