Well, e-mail is used in corporate environments, but (at least here) most companies are using some kind of Office/Exchange/Outlook variant (rarely gmail too), no point for them to use and manage alternate e-mail client.
At work I'm currently using an Office365 based email and I can only access its web version and while I'm on work.
@sgunhouse Thank you....makes sense. Do most email programs (Thunderbird or Outlook for instance as being probably the most popular) offer encryption now? It would be nice for the receiver to just enter a password instead of needing to use the same encryption program to decrypt as it was originally encrypted in.
@webseo Do you have tracker blocking enabled? Google Analytics is a tracker, you may need to disable blocking on that site. No idea on the other site, but it may be the same.