OME is best when your organization needs to send email to people outside your organization who could be on any messaging platform. The recipient of an OME encrypted message can reply using the same encryption, ensuring the whole conversation is encrypted without the recipient needing an Office 365 license. The original recipient of the message uses the HTTPS link to access the original message in their web browser with the standard SSL encryption that we all use on the internet every day. Office 365 Message Encryption (OME) is what most people think of when you say 'email encryption.' OME is a service that intercepts messages matching specific parameters and transport rules, and replaces them with a HTTPS link to a Microsoft server. TLS is best when your organization frequently sends sensitive messages to another organization that you don't want in plain text on the internet. In Exchange, TLS is used to create an organization-to-organization encryption pipeline that secures message traffic between two different Exchange deployments. Transport Layer Security (TLS) is an evolution of SSL originally developed by Netscape for their Navigator browser. Here’s a brief rundown of the available options, and when you might use each type of encryption. There’s too much to talk about, and I've written about encryption in Exchange Online extensively elsewhere. It’s impossible to go into detail for every encryption option. One of the best parts about Exchange Online is that the encryption options are set up and ready to use with minimal effort.

Email encryption options included in Office 365Įxchange Online in Office 365 includes several different encryption options. Here's a summary of the different encryption options in Office 365, and how to encrypt your data (and why you would want to) so Microsoft can’t access it inside Office 365. This customer’s main goal was encrypting email messages so Microsoft can’t access them.

The customer wanted to know the pros and cons of each encryption option in Office 365. I had an interesting discussion recently with a customer about email encryption in Office 365.

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