Office 365 now includes out-of-the-box email encryption, which might just mean that the era of using S/MIME and PGP might be coming to a close, at least inside Office 365. The new functionality scores highly on ease of use and integration, but the lack of support in the current Outlook desktop clients means that adoption will be slow.
Office 365 has given its rights management capabilities a complete refresh. Clients deal with protected email better and it’s easy to send protected email to people inside and outside your organization, including coverage of consumer email systems like Gmail and Outlook.com. And protected email works on mobile devices too.