Yahoo Support Agent facilitates Yahoo users to recover Yahoo Mail password, even if they do not have remember any related information about their email account.
So, in-case you are the one who forgot Yahoo Mail password and about everything related to your account like security question etc. then you must continue with the guide written here to recover Yahoo mail password.
Contact Yahoo Agent to Recover Your Mail Password
Go to Yahoo Help page and select the fields as shown in image below, then scroll down a little to click on
“Email a Support Agent” button “Yahoo Mail” icon and then “Mail for Desktop” option from the menu.
Select “Password and sign in” > “Change Password” > Email as show below.
NOTE: You might not see the Email button, here on step-3 you may need to enter your email address and hit OK button.
On the next page fill in the following fields of form, but give some details in “Detailed Description” as we have done. Tell Yahoo about your mail account that you forgot password and tell them a little about your contacts or folder names you had in your account
If you also do not remember Security Question or Answer, fill in as in following screen, enter CAPTCHA and click on “Send” button
Yahoo Support Agent will send you an email to your specified email address which you provided them in step-2. So, check your email and proceed further to recover your Password with Yahoo through that email message.
Hopefully, you will recover your Yahoo email password within few hours, that all depends on your geolocation.
So, just try this guide to recover your Yahoo Email password and after doing so write your experience in comments.