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mediumOutlookupdatem365_dev · Jun 30, 2026
Mailbox requirement set 1.16 now available for Outlook add-ins
Outlook add-ins now support the Mailbox requirement set 1.16, which includes APIs and platform updates to enhance message and information security.
“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”
View original article →Security
threat_protectionendpoint_security
Audience
developer
Environment
cloud
Classification confidence: 85%
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