It is duty of concerned citizens who object this practice to make them more expensive and less effective.First of all we must fight against But there is another important aspect of this problem which is different from the problem of unhealthy self-revelation zeal that large part of Facebook users demonstrates on the Net.Moreover the collection of email in your Inbox is a more valuable set of information than any single email and tells much more about you that any intercepted email can.Just the set of headers (and your address book) constitute something much more dangerous then a single email.Many people understand why "Fecebook" users should be .Facebook is nothing but an intelligence database about their users. So it is users data is what Facebook actually sells.The list of your connection is enough to tell everything about you, may be even better then content of your conversations via phone.
In other words if technical means of snooping are cheap they will be abused.As we have all found out, that trust is misplaced, as "cloud" services were systematically abused.In a way after Snowden revelations we all now need to learn Aesop language (slang is actually almost in-penetratable to computer analysis, unless they are specifically programmed for the particular one) and be more careful.You can direct all emails from you subscriptions on newspapers, sites and magazines to it.You real account should via one of small ISP on your own domain and possibly using special DNS server.