How does On Demand Migration for Email (ODME) convert Gmail labels to categories in Outlook using the following option?
Using this option to migrate Gmail Labels into Outlook Categories, it copies the emails into this Inbox. Each email will have a category that corresponds to the label it had in Gmail.
Via OWA the email will have the category in the email, however it doesn't display it in the Manage categories.
In Outlook the Color Categories will display the Gmail label information from the email including the message (not in Master Category List) as the email category is based on the email.
NOTE: Category colors do not migrate over. See Solution 120015 for more information.