Outlook plugin

To integrate LockTransfer with your Outlook mail client, download and install the LockSelf plugin. Read on to find out how to install and use this extension on Outlook.


Download the plugin

Go to the Microsoft AppSource Store and search for « LockSelf » or follow this link to download the LockSelf plugin.

Click on « Get Now ». 


If you haven't already done so, log in to your email account : 


Plugin installation

Save your information and click on « Continue » 


Make sure the plugin is properly installed and activated

"Thick" client

  1. Close your thick client
  2. Restart it
  3. Open a new mail
  4. Check your toolbar to make sure the Secure Attachments icon appears



  1. Open the Outlook webapp
  2. Open a new message
  3. Make sure that the LockSelf icon appears in your toolbar


Plugin update

Your extension is automatically updated with the new LockSelf features. There is nothing to do on your side.

Plugin compatibility

As of Windows 10 20H2 for (available since October 20, 2020)

  • Outlook 2013 or later
  • Outlook on Windows (Microsoft 365)
  • Outlook on the web

As of MacOS Mojave for

  • Outlook 2016 or later
  • Outlook 2019 or later