Dharmesh Mehta, senior director of Outlook.com, has already been extremely helpful with our inboxes.
So let's move on to perhaps the most delicate inbox issue of all: email etiquette?
Here's the scenario: You've got a friend, let's call him Dan, who you want to communicate with. Do you shoot him an email, call him, Skype him, or set up a lunch date?
According to Mehta, it's important to remember that email isn't the only way to keep in touch.
"An important aspect of email is that it's just one form of communication," he says. "Sometimes I don't want to do anything digitally, I just want to see you in real life and interact with you. It's important to know how to shift between these."
If you need to reach Dan urgently, an email is not the best mode of communication. But it does allow Dan to work at his own pace and not feel rushed.
"That might be today, that might be tomorrow, or four weeks from now," Mehta says. "Dan's a busy guy, and it lets him decide."
Mehta recommends that when choosing a mode of communication, it's important to weigh your options, and aim for the most appropriate. Ideally, sending an email should create a personal experience and enrich your relationships.
"Different modes of communication for different things you want to do," he says.