Sign in with Microsoft
Sign in or create an account.
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.

What are the requirements for running S/MIME?

  • Active subscription to Office 365, currently running the new Microsoft sync protocol

  • Current mailbox resides within O365 tenant (must be native EXO mailboxes)

  • Ability to update Exchange policy to permit pfx attachments over email

  • iOS: Running 11.0 and higher

  • Android: Running 4.4 and higher

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Was this information helpful?

What affected your experience?
By pressing submit, your feedback will be used to improve Microsoft products and services. Your IT admin will be able to collect this data. Privacy Statement.

Thank you for your feedback!