I have a hard time fitting my iPad in my pocket - ruined more than a few pairs of pants trying - plus the stares I got in Narita were unsettling. However, it does make a nice little "ding" when I get a new email. I also get a red circle with the number of new emails inside with absolutely zero logins or inputs on my part whenever the iPad is "connected" via data or wifi.

I don't claim to be an expert on any of this. But, compared to the way I used to have to get email by logging into VIPs or the huge hassle on my personal laptop after the migration, this is a breeze. No effort, no login, they just show up. As an added bonus, they're not connected to my personal tech world at all. Only on the company iPad where they belong. YMMV, but I recommend you give it a try.