How to Encrypt Email With S/MIME Extension on Outlook Web?

It’s true that, as the world becomes more reliant on technology, the security of your inbox has become more important than ever. Sensitive data moves across the internet every day through emails which makes them easy targets for cyberattackers. Consider the risks of having sensitive business information, personal monetary details, or even private conversations placed into the incorrect hands.

This is the sad truth of email communication without encryption. Email encryption serves as a powerful protector that converts your messages into code that is only able to be unlocked by the intended recipient. This not only protects your privacy but also enhances trust and credibility in your communications.

Among the various encryption methods available, S/MIME (Secure/Multipurpose Internet Mail Extensions) stands out as a time-tested and highly reliable standard. It’s a robust protocol used globally to secure email communication through encryption and digital signatures, offering a strong layer of defense against unauthorized access and tampering. For users of Outlook Web, Microsoft’s browser-based email platform, leveraging S/MIME encryption is achievable through a browser extension.

This brings enterprise-grade security directly to your webmail experience. Are you looking to fortify your email communications on Outlook Web with enhanced security? This comprehensive guide will walk you through how to encrypt email in Outlook using the S/MIME extension. We’ll demystify the process, making it easy for you to implement this crucial security measure and take control of your email privacy.

Understanding Email Encryption and S/MIME

In order to effectively encrypt with S/MIME in Outlook Web, it’s crucial to grasp the underlying concepts of email encryption and the S/MIME protocol itself. Let’s delve into why encryption is essential and what makes S/MIME a robust choice for securing your email communications.

Why Encrypt Your Emails?

Today’s reality is that emails are sent through multiple networks, just like postcards being sent through the postal service. If they are not encrypted, these digital postcards are unsecured on multiple levels, putting sensitive information at risk.

1. Risks of Unencrypted Emails:

Eavesdropping: Unencrypted emails are like sending postcards in plain sight. Cybercriminals or malicious actors can intercept and read your messages as they travel across the internet. This is akin to someone secretly reading your postcards without your knowledge.

Data Breaches: If your email account or the recipient’s email server is compromised, unencrypted emails stored within are easily accessible. This can lead to large-scale data breaches, exposing personal and confidential information to unauthorized parties.

2. Benefits of Encryption:

Confidentiality – Encryption ensures that only the intended recipient can decipher and read your email’s content. It scrambles your message into an unreadable format during transit and storage, protecting sensitive information from prying eyes. Think of it as sending your postcard in a locked box that only the recipient has the key to.

Integrity – Encryption, especially when combined with digital signatures (a key feature of S/MIME), guarantees the integrity of your message. Recipients can be certain that the email they receive is exactly as you sent it and hasn’t been tampered with or altered in transit.

Authentication – S/MIME uses digital certificates to verify the sender’s identity. This provides strong authentication, assuring recipients that the email truly originates from you and not an imposter. This is like having a verified return address on your postcard, confirming its origin.

What is S/MIME Extension?

S/MIME, which stands for Secure/Multipurpose Internet Mail Extensions, is a widely accepted industry-standard protocol for email security. It provides robust cryptographic security for electronic messaging, offering both encryption and digital signature capabilities.

Industry-Standard Protocol – S/MIME has been around for decades and is recognized as a mature and reliable method for securing emails. Its widespread adoption across various email platforms and organizations speaks to its effectiveness and trustworthiness.

Encryption and Digital Signing – S/MIME’s core functionalities revolve around two key security features:

• Encryption: S/MIME encrypts the body of your email and attachments, rendering them unreadable to anyone without the corresponding decryption key.
• Digital Signatures: S/MIME allows you to digitally sign your emails, adding a layer of authentication and non-repudiation. A digital signature acts like a tamper-proof seal, verifying your identity as the sender and assuring the recipient that the message hasn’t been altered since it was sent.

Reliance on Digital Certificates – At the heart of S/MIME’s security is its use of digital certificates. These digital certificates are issued by trusted Certificate Authorities (CAs) and act as digital IDs for users. They contain the public key needed for encryption and are linked to the user’s identity, enabling secure key exchange and verification. For how to encrypt email in Outlook with S/MIME, having a valid digital certificate is a prerequisite.

S/MIME and Outlook Web: A Powerful Security Duo

Outlook Web, being a browser-based email client, benefits significantly from the security enhancements offered by S/MIME, especially when you utilize the s/mime extension.

• Enhanced Security for Outlook Web: By implementing S/MIME in Outlook Web, you elevate the security of your webmail experience to a level comparable to desktop email clients that natively support S/MIME. The s/mime extension bridges the gap, bringing robust encryption and digital signing capabilities to your browser-based Outlook.
• End-to-End Encryption: The most significant advantage of using S/MIME in Outlook Web is that it provides true end-to-end encryption. This means your email is encrypted on your device before it leaves your computer, remains encrypted during transit, and is only decrypted by the recipient on their device. No one in between, including your email provider, can access the content of your encrypted messages. This end-to-end protection is paramount for maintaining the highest level of email confidentiality and is a key reason why understanding how to encrypt email in Outlook with S/MIME is so important.

Installing the S/MIME Extension in Outlook Web

Before you can effectively encrypt with s/mime in Outlook Web, the essential first step is installing the S/MIME extension. This extension acts as the bridge, enabling your browser to handle the encryption and decryption processes seamlessly within the Outlook Web interface. Let’s explore the prerequisites and the installation steps to get you started.

Prerequisites for S/MIME in Outlook Web

Before diving into the installation, ensure you meet these prerequisites to guarantee a smooth setup:

1. Supported Browsers: The S/MIME extension for Outlook Web is designed to work with modern web browsers. You’ll typically find compatibility with:

• Google Chrome: The latest stable versions of Chrome are generally well-supported.
• Microsoft Edge: Microsoft Edge, being a Chromium-based browser, usually offers good compatibility.
• Safari: Safari on macOS is often supported, but it’s important to check for version compatibility.
• Firefox: Modern versions of Firefox generally support the S/MIME extension.

It’s always recommended to use the latest stable version of your preferred browser for optimal performance and security.

2. S/MIME Digital Certificate: A digital certificate is the cornerstone of S/MIME encryption. It acts as your digital identity and contains the cryptographic keys necessary for encrypting and decrypting emails. You’ll need to obtain an S/MIME certificate before you can encrypt email in Outlook using the extension. You can typically obtain a certificate from:

• Your Organization: If you are using Outlook Web for work, your organization’s IT department might provide S/MIME certificates to employees. Check with your IT administrator to inquire about obtaining a certificate.
• Certificate Authority (CA): Numerous trusted Certificate Authorities (CAs) issue S/MIME certificates to individuals and organizations. Some CAs offer free personal certificates, while others provide paid certificates with varying features and levels of support. Reputable CAs include Comodo, DigiCert, and GlobalSign. Research and choose a CA that suits your needs and budget.

Step-by-Step Installation Guide

The installation process for the S/MIME extension is generally straightforward and browser-dependent. Below are general steps and considerations for popular browsers. Please note that the exact steps may vary slightly depending on your browser version.

For Google Chrome and Microsoft Edge (Chromium-based browsers):

1. Access Outlook Web: Open your Chrome or Edge browser and navigate to the Outlook Web login page for your organization or personal Microsoft account.
2. Compose or Read a Message: Initiate composing a new email or open an existing email in your inbox.
3. Look for the S/MIME Prompt: If the S/MIME extension is not yet installed, Outlook Web will typically display a prompt or notification indicating that “s/mime isn’t supported in this view” or “you can’t sign or encrypt this message until the s/mime extension is installed.” This prompt usually includes a link or button to install the extension.
4. Install the Extension: Click on the installation prompt. This will usually redirect you to the Chrome Web Store (for Chrome) or the Edge Add-ons store (for Edge).
5. Add to Browser: In the respective store, you will find the “Microsoft S/MIME for Outlook Web” extension. Click the “Add to Chrome” or “Get” button to install the extension.
6. Grant Permissions: The browser will likely ask for permissions for the extension to access Outlook Web. Review the permissions and click “Add extension” to proceed.
7. Verify Installation: Once installed, you might see a confirmation message. Refresh your Outlook Web page. Try composing a new email and check if the encryption options are now available (usually under “More options” or similar).

For Mozilla Firefox:

1. Access Outlook Web: Open Firefox and go to the Outlook Web login page.
2. Compose or Read a Message: Start composing a new email or open an existing one.
3. S/MIME Prompt: Similar to Chrome and Edge, Firefox should display a prompt if the S/MIME extension is missing, indicating that “you can’t sign or encrypt this message until the s/mime extension is installed.”
4. Install from Firefox Add-ons: Click the prompt to be directed to the Firefox Add-ons website.
5. Add to Firefox: Locate the “Microsoft S/MIME for Outlook Web” extension and click “Add to Firefox.”
6. Allow Installation: Firefox will ask for permission to install the extension. Click “Add” to allow the installation.
7. Restart Firefox (if prompted): In some cases, Firefox might require a restart to fully enable the extension. If prompted, restart your browser.
8. Verify Installation: After installation and restart (if needed), refresh Outlook Web and check for the encryption options when composing a new email.

For Safari (macOS):

Safari’s support for S/MIME extensions might be different or require specific configurations. Always refer to the latest Microsoft documentation or Safari extension store for the most accurate instructions for your Safari version and macOS.

1. Access Outlook Web: Open Safari on your macOS system and navigate to Outlook Web.
2. Check for Extension Availability: Safari’s extension installation process might differ. Look for prompts within Outlook Web or check the Safari Extensions Gallery for the “Microsoft S/MIME for Outlook Web” extension.
3. Install from Safari Extensions Gallery (if available): If found, follow the installation instructions provided in the Safari Extensions Gallery.
4. Grant Permissions (if required): Safari may ask for permissions for the extension. Grant the necessary permissions.
5. Verify Installation: Refresh Outlook Web and check for encryption options when composing a new message.

Troubleshooting Tips and Common Error Messages:

“S/MIME isn’t supported in this view” / “You can’t sign or encrypt this message until the s/mime extension is installed”: These messages are the primary indicators that the S/MIME extension is not installed or enabled in your browser. Follow the installation steps above for your specific browser.

Extension Installation Failed:

If the extension fails to install, ensure:

• You are using a supported browser version.
• Your browser’s extension settings are not blocking installations from the respective extension stores.
• You have a stable internet connection.
• Restart your browser and try the installation again.

Encryption Options Not Appearing:

If you’ve installed the extension but don’t see encryption options in Outlook Web, try:

• Refreshing the Outlook Web page (Ctrl+F5 or Cmd+Shift+R for hard refresh).
• Closing and reopening your browser.
• Checking if the extension is enabled in your browser’s extension settings/add-ons manager.
• Ensuring you have a valid S/MIME certificate installed in your operating system’s certificate store (this is sometimes a prerequisite for the extension to function correctly).

Encrypting and Decrypting Emails with S/MIME in Outlook Web

With the S/MIME extension successfully installed, you’re now equipped to send and receive encrypted emails in Outlook Web, taking your email security to the next level. Let’s explore the practical steps involved in how to encrypt email in Outlook and decrypt S/MIME protected messages.

How to Encrypt an Outgoing Email in Outlook Web using S/MIME

Sending an encrypted email with S/MIME in Outlook Web is a straightforward process. Follow these step-by-step instructions to secure your outgoing messages:

1. Compose a New Email:

Begin by clicking the “New message” button in Outlook Web to start writing your email as you normally would. Address your email to the intended recipient and compose your message content.

2. Locate the “Encrypt” Option:

Once you’ve drafted your email, look for the “Encrypt” option. This is typically found within the message options. In Outlook Web, you can usually access it by:

• Clicking the “…” (More options) menu in the email composition window.
• Looking for an “Encrypt” button or a similarly labeled option in the dropdown menu. The exact wording may vary slightly depending on your Outlook Web version.

3. Enable S/MIME Encryption:

Click on the “Encrypt” option. This will present you with encryption choices. Select the option that indicates S/MIME encryption. This action signals to Outlook Web that you intend to encrypt with s/mime for this particular email.

4. Recipient Certificate Verification (Automatic):

Outlook Web, with the S/MIME extension, will automatically attempt to retrieve the digital certificate of the recipient(s) you’ve addressed the email to.

• Certificate Availability: For S/MIME encryption to work, the recipient must have a valid S/MIME certificate and have shared their public certificate with you previously (or have sent you a digitally signed email before). Outlook Web will check if it can access the recipient’s certificate.
• Certificate Selection (If Multiple): In some cases, if you have multiple certificates for a recipient (e.g., from past communications), Outlook Web might prompt you to select the correct certificate to use for encryption. Choose the most recent and valid certificate for the recipient.
• No Certificate Found: If Outlook Web cannot find a valid S/MIME certificate for a recipient, you will typically receive a notification. You will not be able to encrypt with s/mime for that recipient unless they have a valid certificate and you have access to it. In such cases, you can:

1. Request Certificate: Contact the recipient and ask them to send you a digitally signed email. This process often automatically exchanges certificates.
2. Exchange Certificates Manually: If you know how, you and the recipient can manually exchange your public certificates. This is a more technical process.

5. Send the Encrypted Email:

Once you’ve enabled S/MIME encryption and Outlook Web has successfully retrieved the recipient’s certificate (or you’ve bypassed encryption for recipients without certificates), click the “Send” button. Your email will be encrypted using S/MIME before it is transmitted.

Decrypting S/MIME Encrypted Emails in Outlook Web

Receiving and decrypting S/MIME encrypted emails in Outlook Web with the extension installed is generally a seamless and automatic process:

1. Receiving an Encrypted Email:

When someone sends you an S/MIME encrypted email, it will arrive in your Outlook Web inbox like any other email. However, you might notice a visual indicator (like a padlock icon or similar) in your inbox or next to the email subject line, signifying that the message is encrypted.

2. Automatic Decryption by the S/MIME Extension:

The S/MIME extension in your browser automatically handles the decryption process in the background when you open an encrypted email.

• Seamless Experience: In most cases, you won’t need to do anything special. Simply click on the encrypted email to open and read it. The extension uses your private key (associated with your S/MIME certificate, which is securely stored) to decrypt the message content.
• Plain Text Display: Once decrypted, the email content will be displayed in plain text, just like any regular email. The S/MIME extension works behind the scenes to provide a user-friendly decryption experience.

3. Visual Confirmation of Decryption:

Within the opened encrypted email, you may see visual cues confirming that the message was indeed encrypted and successfully decrypted by S/MIME. This could be an icon, a message header, or similar indicators provided by the Outlook Web interface or the S/MIME extension.

4. Troubleshooting Decryption Failures:

While decryption is usually automatic, issues can occasionally arise. If you encounter problems decrypting an S/MIME encrypted email, consider these troubleshooting steps:

• Verify S/MIME Extension is Enabled: Ensure that the S/MIME extension is still installed and enabled in your browser’s extension settings.
• Check Certificate Validity: Make sure your S/MIME digital certificate is valid and has not expired or been revoked.
• Certificate Installation: In rare cases, you might need to ensure your S/MIME certificate is correctly installed in your operating system’s certificate store as well, although the browser extension usually manages certificate handling.
• Browser Compatibility: Confirm you are using a supported browser version as mentioned in the installation prerequisites.
• Contact Sender: If you still cannot decrypt the email, contact the sender to verify if the email was indeed correctly encrypted with S/MIME and if there might be any issues on their end.

Managing S/MIME Certificates in Outlook Web

Effective management of your S/MIME certificates is crucial for maintaining secure email communication in Outlook Web. This involves understanding how to import, export, renew, and, when necessary, revoke your digital certificates. Let’s explore these key aspects of certificate management to ensure your continued ability to encrypt with s/mime and maintain your email security posture.

Importing and Exporting S/MIME Certificates

While Outlook Web primarily utilizes the S/MIME extension for certificate handling, understanding how to import and export certificates can be important for backup purposes or when you need to use your certificate across different devices or email clients.

1. Importing S/MIME Certificates into Outlook Web:

Generally, Outlook Web with the S/MIME extension relies on the operating system’s certificate store for certificate access. You typically don’t directly “import” certificates into Outlook Web itself in the same way you might with a desktop email client.

2. Operating System Certificate Store:

Your S/MIME certificate is usually installed and managed at the operating system level (e.g., Windows Certificate Store, macOS Keychain Access). When you install your S/MIME certificate (often provided as a .pfx, .p12, or .cer file), you typically import it into your operating system’s certificate store.

3. Extension Access:

The S/MIME extension for Outlook Web then accesses this system-level certificate store to find and utilize your S/MIME certificate for encryption and decryption operations.

Import Process (Operating System Level – Example for Windows):

Locate your Certificate File: Find the S/MIME certificate file (e.g., your_certificate.pfx or .p12) that you obtained from your organization or a Certificate Authority.

Double-Click to Import: Double-click the certificate file. This will usually launch the Certificate Import Wizard.

Follow the Wizard: The wizard will guide you through the import process. You’ll typically be prompted to:

Note: The import process for macOS Keychain Access is similar – you typically double-click the certificate file and follow the prompts to import it into your Keychain.

Exporting S/MIME Certificates (for Backup or Other Devices):

Exporting your S/MIME certificate allows you to create a backup copy or use it on other devices or email clients that support S/MIME. You would typically export your certificate from your operating system’s certificate store, not directly from Outlook Web.

Export Process (Operating System Level – Example for Windows):

1. Open Certificate Manager: Press Windows Key + R, type certmgr.msc, and press Enter to open the Certificate Manager.

2. Locate Your Certificate: In the Certificate Manager, navigate to “Certificates – Current User” -> “Personal” -> “Certificates”. Find your S/MIME certificate in the list. It will usually be issued to your name or email address.

3. Export Certificate: Right-click on your S/MIME certificate and select “All Tasks” -> “Export…”. This will launch the Certificate Export Wizard.

4. Export Private Key (If Backing Up):

• Yes, export the private key: If you are exporting for backup or to use the certificate on another device where you need to encrypt and decrypt emails, choose “Yes, export the private key”. Protect your private key securely!
• No, do not export the private key: If you only need to export the public certificate (e.g., to share with someone so they can encrypt emails to you), choose “No, do not export the private key”.

5. Export File Format: Choose the export file format.

• .PFX or .P12 (Personal Information Exchange): This format is recommended for backup and transferring certificates with private keys. It typically includes both the public and private key in a single, password-protected file.
• .CER or .CRT (DER encoded binary X.509 or Base-64 encoded X.509): Use these formats if you only need to export the public certificate (without the private key).

6. Password Protection (If Exporting Private Key): If you chose to export the private key, you’ll be prompted to create a strong password to protect the exported certificate file. Remember this password and keep it secure!

7. Choose Export Location: Select a location on your computer to save the exported certificate file.

8. Complete Export: Finish the wizard steps. Your certificate will be exported to the chosen file location.

Note: The export process for macOS Keychain Access is also done through the Keychain Access application. You would typically find your certificate, right-click (or Control-click) it, and choose “Export”.

Renewing and Revoking S/MIME Certificates

S/MIME certificates are not perpetual; they have a validity period. Understanding certificate renewal and revocation is essential for maintaining continuous email security.

Certificate Validity and Renewal:

Validity Period: S/MIME certificates are issued with a specific validity period, typically one to three years. After this period, the certificate expires and can no longer be used for encryption or digital signing.

Renewal Process: Before your certificate expires, you will need to renew it. The renewal process usually involves:

Timely Renewal: It’s crucial to renew your S/MIME certificate before it expires to avoid any interruption in your ability to send and receive encrypted emails. Set reminders for your certificate’s expiration date.

Certificate Revocation:

Revocation Meaning: Certificate revocation is the process of invalidating a digital certificate before its natural expiration date. A revoked certificate is no longer considered valid or trustworthy.

Reasons for Revocation: Certificates are typically revoked in situations such as:

Revocation Process: Certificate revocation is usually initiated by the certificate holder (you) or the issuing Certificate Authority. The process typically involves:

Importance of Revocation:

Revoking a compromised or no-longer-needed certificate is a critical security measure. It prevents malicious actors from potentially using a compromised certificate to impersonate you or decrypt your past encrypted communications.

Advanced S/MIME Features and Considerations in Outlook Web

Beyond basic encryption and decryption, S/MIME offers advanced features and considerations that are important for comprehensive email security in Outlook Web. Let’s explore digital signatures, compatibility aspects, and best practices to maximize the benefits of using the s/mime extension.

Digitally Signing Emails with S/MIME

While encryption focuses on confidentiality, digital signatures address authentication and integrity. S/MIME empowers you to not only encrypt your emails but also to digitally sign them, adding another layer of security and trust to your communications.

Concept of Digital Signatures:

How to Digitally Sign Emails in Outlook Web using the S/MIME Extension:

1. Start writing your email in Outlook Web as usual.
2. Similar to encryption, the “Sign” option is usually found within the message options.

3. Select the “Digitally sign” or “Sign” option. This tells Outlook Web that you want to add a digital signature to this email using your S/MIME certificate.

4. Once you’ve enabled digital signing, compose your message and click “Send”. Outlook Web, with the S/MIME extension, will automatically use your S/MIME certificate to digitally sign the email before sending it.

Benefits of Digitally Signing Emails:

Compatibility and Interoperability

While S/MIME is a widely adopted standard, it’s important to consider compatibility and interoperability aspects when using it in Outlook Web.

S/MIME Compatibility with Different Email Clients and Platforms:

Broad Support: S/MIME enjoys broad support across various email clients, including desktop clients like Microsoft Outlook (desktop version), Thunderbird, Apple Mail, and mobile email apps. It’s also supported by many webmail platforms beyond Outlook Web, although the implementation and extension requirements might vary.

Interoperability Challenges: While widely supported, seamless interoperability isn’t always guaranteed. Potential issues can arise due to:

Communicating with Users Who Don’t Use S/MIME:

Unencrypted Communication: If you attempt to send an encrypted email to a recipient who doesn’t have an S/MIME certificate or whose certificate you don’t have access to, Outlook Web (with the S/MIME extension) will typically notify you. You will usually have the option to:

Digital Signatures Still Work (For Authentication): Even if you send an unencrypted email but digitally sign it with S/MIME, recipients who don’t use S/MIME will still be able to see that the email is digitally signed (though they might need to use a web browser or a tool to verify the signature if their email client doesn’t natively support it). The digital signature provides authentication and integrity even for unencrypted messages.

Educating Recipients: If you frequently need to communicate securely with someone who doesn’t use S/MIME, consider gently encouraging them to adopt S/MIME or another compatible encryption method to enable secure end-to-end encrypted communication.

Best Practices for Using S/MIME in Outlook Web

To ensure you are using S/MIME in Outlook Web effectively and securely, consider these best practices:

Secure Certificate Management:

• Protect Your Private Key: Your private key is the most sensitive part of your S/MIME certificate. Protect it diligently. Use strong passwords if you export your certificate with the private key. Store backups securely. Never share your private key with anyone.
• Regularly Back Up Certificates: Periodically export and back up your S/MIME certificate (including the private key if you intend to use it for encryption and decryption elsewhere). Store backups in a secure location, separate from your primary computer.
• Renew Certificates Before Expiry: Keep track of your certificate’s expiration date and renew it promptly before it expires to avoid disruptions in your secure email communication.
• Revoke Compromised Certificates Immediately: If you suspect your private key has been compromised, or if your certificate is no longer needed (e.g., you change roles or leave an organization), revoke it immediately through your CA or IT department.

Tips for Smooth Email Encryption and Decryption Workflows:

Exchange Certificates Initially: – Before attempting to send encrypted emails regularly to a contact, exchange digitally signed emails first. This often facilitates automatic certificate exchange and storage, making subsequent encrypted communication smoother.

Inform Recipients About Encryption: – When you start sending encrypted emails to someone for the first time, it’s helpful to briefly inform them that you are using S/MIME encryption. This manages expectations and helps them understand the security measures in place.

Consider Digital Signing by Default: – Even if you don’t always encrypt every email, consider digitally signing your important outgoing emails by default. This provides authentication and integrity benefits even for recipients who may not be using S/MIME encryption.

Test Encryption Regularly: – Periodically send test encrypted emails to yourself or trusted colleagues to ensure your S/MIME setup in Outlook Web is working correctly and that you can both encrypt and decrypt messages without issues.

Guidance on Educating Email Recipients about S/MIME:

• When encouraging others to use S/MIME, focus on the benefits: enhanced privacy, data security, trust, and protection against eavesdropping and phishing.
• Explain S/MIME in non-technical terms, focusing on the analogy of secure envelopes for emails. Avoid jargon or overly complex explanations.
• If you are encouraging colleagues or team members to adopt S/MIME, offer to assist them with the setup process, certificate acquisition, and extension installation.
• Suggest starting with digitally signing emails first as it’s often a simpler initial step than full encryption and still provides valuable authentication benefits.

Conclusion:

Given the loopholes in the circulation of data these days, there has been an increase in privacy invasions due to data breaches. An example that speaks to this concern is email encryption, which has evolved from being a mere luxury to an absolute necessity. Like we discussed throughout this portal, keeping your email messages safe is really important, and S/MIME, along with the s/mime extension for Outlook Web, is one powerful and easy-to-use answer.
Learning how to encrypt email in Outlook using S/MIME gives you the power to take charge of the security of your email. With this protocol in place, you can keep your delicate information private, proof the messages you send as true, and validate who the sender is. Now you can use the s/mime extension to your beloved Outlook Web. It effortlessly adds this amazing encryption feature so that your secure emails can be transmitted through webmail interface and get complete protection.
We recommend that you use S/MIME encryption with your Outlook Web account. The comfort that comes knowing that your emails – be it personal or professional – are sent in a secured way and protected from any unauthorized surveillance cannot be emphasized more. Follow the directions indicated in this tutorial to install the s/mime extension, get your digital certificate, and start encrypting and digitally signing your emails now.