Thank you Clifford, but I don't have the first screenshot window you show.
Maybe I asked this question wrong, the folders I want to find are actually the subject lines that are inside the folders, like the "Inbox", "Drafts", etc. I'm sorry.
However, if the method you sent me is to locate folders at the left column, then it would also be important since I haven't been able to alphabetize these folders created by me, and there being many, it takes me a very long time to choose them. But as mentioned, I don't have the first window you show.
As to the other question, how to get rid of numerous Arab messages, may I send you a screenshot as an attachment? I just realized I deleted them, so may I send the screenshot when they get into my Inbox again?
Thanks so much!