Mailbox requirement set 1.16 now available for Outlook add-ins

Mailbox requirement set 1.16 is now generally available for Outlook add-ins. This release reflects our continued investment in closing the gap between COM/VSTO and web add-ins, with a focus on message and information security. Mailbox 1.16 introduces APIs and platform updates that enable your add-in to: Decrypt protected messages and attachments in an event-based workflow.