Complete Guide: Email Encryption in Outlook / Microsoft 365

Learn what email encryption is, when to use encryption, and how to encrypt emails in Outlook / Microsoft 365.

Video Chapters:
00:00 – Intro

00:28 – What is Email Encryption?

00:47 – Why Should You Encrypt an Email?

01:57 – What Emails Need Encryption?

02:35 – Encrypting Emails in Outlook Application

04:46 – Encrypting Emails in Outlook Web Version

05:30 – Opening/Viewing Encrypted Emails

08:41 – Replying to Encrypted Emails

10:28 – Applying Encryption to a Reply Email

[jessicawong]

Thanks for the video - any chance you can elaborate on how you achieved sending along the instructional guide email automatically? Is it via an Exchange rule, Power Automate or PowerShell?

[gblroxw]

You forgot to mention that you need to get a certificate key to allow using the encryption option in Office 365. Encryption won't be available until you get the certificate.

[MB-hzwm]

The majority of this video is stellar ~ thank you.. but why would you advise signing into a 3rd party platform using an email account? That platform now has your creds. People should be using the OTP by default.

[b.c.]

In my Outlook 365 latest version "Encrypt" option is missing

[Maz]

Amazing information. Can you encrypt an email after the email was sent not encrypted?

[ThomasBillet-jggv]

Did you forget to mention that you need a certificate in order for the encryption to work?

[muftitvwaytojannah]

Hi, In o365 to O365 why not encryption showing the way it is showing in the Gmail. In O365 Encrypted message can be download, preview and forward to other. then what's the point of Encrypt email.

[cafone]

I am getting an error when using the encryption button. This is on all computers in the tenant, so I am not sure why my button will not just add encryption.

[mrwhammer]

i gave myself the license but i dont see the encryption do i need to restart my computer? i already signed out and back in

[niravshah]

Very Well explained process and all aspects of the same. Super Thanks!!

[ThepplsCAMP]

What do we do if a passcode is not received?

[terryw]

I don't see any padlocks anywhere

[robynj]

I'm using 365 outlook & encrypt is not an option unless I set if for ALL emails. Why?