Microsoft Outlook is a popular piece of personal communication software. It is most commonly used to send, receive, and manage email messages, but also provides comprehensive calendar functionality, an address book, Notes Manager and more. As with other Microsoft Office suite programs such as Word and Excel, a font must be installed through the Windows Fonts Manager for it to appear in the font selection menu in Outlook, even if it already works correctly in other programs.
If Microsoft Outlook is currently open, close it.
Locate the font file with a .pfm suffix, which is associated with the version of the Helvetica font you want to use in Outlook. Make a note of its folder location.
Click the Windows Start button and select "Run." Enter "%windir%\fonts" (without quotation marks) and then click "OK" to open the Windows Fonts utility.
Select "File" from the top menu bar and then choose "Install New Font."
Navigate to the folder containing the .pfm file that you located in Step 1, using the menu in the lower-left corner of the font installation dialog box. Helvetica will appear in the "List of fonts" at the top of the box once you access the folder. Click the font name and then click the "Install" button after this occurs. The font will be available for use the next time you start Outlook.