From your description, I understand that you are using GoldMine Link for Microsoft Outlook. If this is the case then there is no possibility to configure linked emails as pending items. GoldMine Link for Microsoft Outlook has only the possibility to link emails into the Filed folder and under the contact's History tab.
From Tools >> Configure >> Outlook Integration, you would configure GoldMine Plus for Microsoft Outlook which would not work if you have installed the Outlook Link instead of GoldMine Plus (Outlook Integration). For GoldMine Link for Microsoft Outlook you would need to use Tools >> Configure >> GoldMine Link Outlook Settings instead.
I hope this helps.