customizing the email function bar does not allow addition of “move to inbox”. “move to inbox” also does not appear in options when right clicking an email.
“Move to Folder” is the option you add to the toolbar. Click on that & then select whatever folder or label you want to move the messages to.
There is no separate Move to inbox option as everything is done via the Move to folder.
“Move to Inbox” is the undo for “Move to Junk”. It is only available when you are in the Junk folder.