With the August 30, 2020 release CloudExtend has changed the category name applied to emails from "Attached to NetSuite" to "Synced by CloudExtend".
The new category, "Synced by CloudExtend", is used whenever CloudExtend is able to use the newer asynchronous attach method. The older, "Attached to NetSuite" category is still used for emails that are attached via an asynchronous method (such as from compose mode).
Some users my want to rename all their existing "Attached by NetSuite" categories to the newer "Synced by CloudExtend". The following video walks you through this process.