The following instructions will guide you through the process of customizing the Outlook Today screen in which you will display your email account inboxes as well as four calendars – side by side.
2. Customize the Microsoft provided built-in Outlook Today form with all of the email accounts you wish to display. You can add or remove them later but this will need to be done via Registry changes. It’s much easier to do this before starting your Outlook Today customization implementations.
3. Place HTML code in a folder. The HTML code is available here. Extract by right clicking on the folder.
4. Once you do this next step, you will unhook the Microsoft provided Outlook Today form.
Add regedit for the external URL.
Add to HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\15.0\OUTLOOK\TODAY a new string called
With the data pointing to the location used in step 2.
This should look something like: File://T:\Dropbox\OutlookToday\OutlookToday.htm
Please note: To revert back to the hook back into the Microsoft provided Outlook Today form, simply delete the Url entry you just added. The Url entry takes precedence over the CustomURL entry.
6. Start Outlook to see your Customized Outlook Today screen. If you need to make changes to the code, exit Outlook and then reload after the changes to the HTML file have been saved. Sometimes the REFRESH option will show your changes, sometimes not.
Further customizations can be done through the Registry Editor in the HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\15.0\OUTLOOK\TODAY area. One nice change you can make is the number of days forward your customized Outlook Today screen displays.
To add additional folders to your email accounts, add those into the Folders area following the content you will see in that location.