one of the best guides for recover deleted files.

1. Recover lost deleted email

2. Step to recover lost deleted email
First you have to Login Yahoo! Mail and go to Trash folder.
1. After that you have to Step 2: Open the desired message,
check any messages you want to undelete in the message
list.
2. Step 3: then Click Move in Yahoo! Mail toolbar and select
Inbox or other folder to recover the message.
3. Step 4: then you have to ,You can also drag and drop the
email to any folder by pressing DO.

3. How can I access my old Yahoo account?
First you have to Restore access to Yahoo accounts created
using a Facebook or Google ID
1. After that Go to the Sign-in Helper.
2. Then you have to Enter your Facebook or Google ID in the
Yahoo ID field, then click or tap Continue.
3. Then Follow the directions to get back into your account.
4. After that Once you've successfully signed in, create a new
password.

4. Some are the important sources where you can read full detail
Recover Lost Deleted Email-
https://www.getysupport.com/recover-lost-deleted-email/

5. Thanks for watching