Notes disappeared when Gmail label deleted

[Sebastiano]

I was trying to clean up Gmail and so I deleted the Notes label, which I presume my MacBook Pro created automatically to sync what I write in the Notes app. After deleting the label, all but one note has disappeared from the app without warning.

If I search for them in Gmail, they appear in their various stages of editing. Is there any way to revert this and get them all back into the Notes app?

[paulsalter]

Not sure if there is a quick way of doing this

Let the Notes app create this label again in Gmail
Go through your All Mail folder and add the Notes label back to the items