Nice idea
The spam emails apart from being on top of the other emails have no benefit of removing them making it an easier task to ignore them, I'd add some +2 or something every time you throw it away or add a reason for not just keeping it around.
I'd also love to see this expanded upon by creating an employee shop or something where you can get more in the team, but this also causes you to get more emails, and maybe somehow get more time. Could be super addicting and make for long gameplays trying to strategize.
I think this has a lot of potential in being a really good addictive game, given some art audio, and extra polish.
Good job!