Emails I was dragging to a newly created folder have disappeared
I just selected about 6 or so emails and was dragging them to a newly created folder so that I could quickly review them and take action as needed. As I dragged them to the folder, it showed a red symbol. I assumed that meant it was not going to copy them to that folder and was prepared to find out why. However, not only did it not copy the emails to the new folder, they are now gone. They are not in ANY folder. I searched by a common word, and they are no where to be found. Help! Please, please, please!!
MacBook Pro 16″, macOS 11.4