To manually add a category for emails in your inbox or sent items:
Right-click on the email you want to categorize.
Select Categorize from the menu.
Choose an existing category or click All Categories to create a new one.
The selected category will now be applied to the email, and it will be color-coded accordingly.
Outlook does not automatically apply categories to drafts.
For draft emails (workaround):
Since Outlook does not allow categories on drafts, you can:
Save the draft and move it to another folder (such as your Inbox).
Right-click and follow the steps above to apply a category.
Move the email back to your Drafts folder if needed.
If the category colors appear greyed out, it may indicate a sync issue or a deleted category. Try reconnecting your email in Fyxer settings to refresh categories.