Who would want to read my emails anyway?
This is a common objection we get from people. Who cares if hackers read my emails, there's nothing interesting in there anyway.
If you don't handle sensitive information like financials, patients health records, share passwords and credit card info over email, and you're just asking Jim where he wants to go to lunch, then maybe.
Think again. Most of the time, hackers aren't trying to read your emails. They are going to send you a phishing link or malicious file that gives them access to your email, a specific account, or your computer. Ultimately, they want money from you. Once they're in your system, they SPAM people using YOUR email address or will find creative ways to impersonate your CEO asking your CFO to make an urgent wire transfer to close a deal.
And when they do that using your company's email, then two things happen. First, if you're the IT guy, then everyone's wondering why you weren't able to prevent this, making you feel embarrassed and your skills inadequate. If you're the CEO, then a handful of customers leave and the rest of them have less confidence in you, making you angry, because you already had tons of other work to deal with, and now a storm hit the fan.