Why can't you just sell them a capped data allowance? I don't see any reason why you need to know where their traffic is going.
Telling a customer they have full access to anything on their email vs telling a customer they have 500mb a month. Which do you think sells better?
They think that they only want email, but what they really want is to access the internet via their email.
And of course monitor account usage and call up tech-savvy granddads who email themselves youtube videos to get around the block.
Also, I don't think I've ever heard such a misuse of the word "simply"
What? What constitutes a "link"? This doesn't make any sense.
4 links away from gmail - not allowed. Pretty simple
Sorry, not interested in giving it up so you can bilk and spy on the elderly.