How To Encrypt Email In Outlook In 2022

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In this article, we have featured How To Encrypt Email In Outlook In 2022. If you want to keep an email message secret, you can encrypt it.

When you encrypt an email message in Outlook, it changes from the plain text that can be read into cipher text that can’t be read. Only the person who gets the message and has the private key that matches the public key used to encrypt it can read it. But anyone who doesn’t have the matching private key can only see unreadable text. Outlook has two ways to protect your data:

1. S/MIME encryption: To use S/MIME encryption, both the sender and the recipient must have a mail program that supports the S/MIME standard. Outlook is compatible with S/MIME.

2. Microsoft 365 Message Encryption (Information Rights Management): The sender must have Microsoft 365 Message Encryption, which is included in the Office 365 Enterprise E3 license, in order to use Microsoft 365 Message Encryption.

Office 365 Encrypted Email

How To Encrypt Email In Outlook

Message Encryption in Microsoft Office 365 (OME) makes it easy to send encrypted emails to your recipient. The benefit of OME is that neither you nor the person receiving the email needs to install a certificate to encrypt or read it.

When you use Office 365 Message Encryption to send an email, the person who gets it will only see the subject. Depending on the recipient’s email client, they can either just open the email (verification happens in the background) or they can read the email and any attachments online after an extra verification step.

You will need to send the email from Outlook or Outlook Online, but the recipient doesn’t need to have Outlook or Office 365. Any email client can read encrypted emails.

Email encryption has a new “Encrypt” button and other changes.

With the new Office update, Outlook now has better email encryption.

This is a feature that only members can use. Only people who pay for Microsoft 365 for Windows desktop clients can use this feature.

The button for “Permissions” The Permissions button has been changed to the Encrypt button.

Both S/MIME and IRM encryption can be done with the new Encrypt button. You can only see the S/MIME option in Outlook if you have set up a S/MIME certificate.

Check out Encrypting with S/MIME or Encrypting with Microsoft 365 Message Encryption for more information on how to add encryption.

How to Use S/MIME to Encrypt

Before you start this step, you must have already added a certificate to your computer’s keychain. After setting up your signing certificate on your computer, you’ll need to set it up in Outlook.

1. Choose Options > Trust Center > Trust Center Settings from the File menu.

2. Click Email Security in the left pane.

3. Choose Settings from the menu under Encrypted email.

4. Click Choose under Certificates and Algorithms and then pick the S/MIME certificate.

5. Choose OK

6. If you have a Microsoft 365 subscription and are an Office Insider, here’s what’s new for you:

  • Choose Options, then Encrypt, and from the drop-down menu, choose Encrypt with S/MIME.
  • If you have a S/MIME certificate on your computer, you will see an Encrypt with S/MIME button.
  • For Outlook 2019 and Outlook 2016,
  • Choose Options and then Permissions from the menu in an email message.

7. When you’re done writing your email, click Send.

Use Microsoft 365 Message Encryption to hide your messages.

If you’re a subscriber to Microsoft 365, here’s what’s new:

Choose Options, then Encrypt, in an email message. Then, choose the encryption that has the restrictions you want to use, such as Encrypt-Only or Do Not Forward.

Options for the Encrypt

Note: The Office 365 Enterprise E3 license includes Microsoft 365 Message Encryption. Also, the Encrypt-Only feature (the option under the Encrypt button) is only turned on for subscribers who also use Exchange Online.

Outlook 2019 and Outlook 2016

In an email message, go to Options > Permissions and choose the encryption option that has the restrictions you want to enforce, such as “Do Not Forward.”

Encipher one message

To change the properties of a message you are writing, click File > Properties.

Select the Encrypt message contents and attachments check box after clicking Security Settings.

Write your message, then click the Send button.

Encrypt all messages that are sent out.
When you choose to encrypt all outgoing messages by default, you can write and send messages just like you would with any other messages, but all possible recipients will need your digital ID to decode or see your messages.

1. Click the File button. select Options > Trust Center > Trust Center Settings from the menu.

2. Under Encrypted email on the Email Security tab, check the box next to Encrypt contents and attachments for outgoing messages.

3. Click Settings to change other settings, such as which certificate you want to use.

What encryption options are available?

As a Microsoft 365 Family or Microsoft 365 Personal subscriber who uses, you’ll see the following:

Encrypt: Your message stays encrypted and never leaves Microsoft 365. Attachments can be downloaded without encryption from, the Outlook mobile app, or the Mail app in Windows 10 by people who have an or Microsoft 365 account. You can use a temporary passcode to download attachments from the Microsoft 365 Message Encryption portal if you are using a different email client or other email accounts.

Encrypt and stop forwarding: Your message stays encrypted within Microsoft 365 and can’t be copied or sent to someone else. Even after they are downloaded, Microsoft Office attachments like Word, Excel and PowerPoint files are still encrypted. You can download other attachments, like PDF files or image files, without encryption.

Conclusion: How To Encrypt Email In Outlook

Outlook has more than one way to encrypt email. If you have a license for Office 365, message encryption is the easiest way to do it. Add-ins can be helpful, but if you have Office 365, it might be easier and cheaper to just upgrade your license plan.

Certificates are only useful for encrypting email if you are sending a lot of secure emails to a small group of people. Don’t forget that each party needs its own certificate.

Aishwar Babber

Aishwar Babber is a passionate blogger and a digital marketer. He loves to talk and blog about latest tech and gadgets, which motivates him to run GizmoBase. He is currently practicing his digital marketing, SEO, and SMO expertise as a full time marketer on various projects. He is an active investor in DotComDevelopment and