How do you remove signatures from the list that appears on the built-in Outlook editor's Insert, Signature menu? I deleted the signature files from the Signatures folder, but they still appear on the list.

You can clear the entire list of recently used signatures, which Outlook stores in the Windows registry as part of the user's mail profile. To clear the list, first back up the registry. Then navigate to the HKEY_CURRENT_ USER\Software\Microsoft\Windows NT \CurrentVersion\Windows Messaging Subsystem\Profiles\mail profile name \0a0d020000000000c000000000000046 subkey. Locate and delete the REG_BINARY value named 101f035c.

Note that WordMail—Microsoft Word as the Outlook email editor—does things differently. When you right-click a signature that Outlook inserted automatically into a WordMail message, the context menu shows only the signatures present in the Signatures folder, %userprofile%\application data\microsoft\signatures.