Is there any chance that emClient would consider implementing support for communication over the BitMessage protocol, which is far more secure than the outdated SMTP and IMAP standards that leak metadata like a sieve?
BitMessage is the new, open source P2P encrypted protocol for exchanging messages without being traced.
http://www.businessweek.com/articles/…
Source code available at https://bitmessage.org/wiki/Main_Page
If you added this I think you might actually gain a competetive advantage against Outlook in the business segment, where people should rightfully be afraid of industrial espionage carried out by the US government through their PRISM and XKeyScore programmes.