Here’s how:
pop launch the message by selecting it in yourInbox.
Alternatively, selectReplyin Yahoo Mail’s toolbar (arrow pointing to the left).
check that your reply is relevant to all recipients if you use this.

Compose your message and selectSend.
(To open an email in Yahoo Mail Classic, punch its subject.)
Now selectReplyat the top left side of the main pane (a single arrow pointing to the left).

Add or remove any additional recipients in theTo,CC, orBccfields, then begin composing your reply.
If you find the original message quoted in your reply, verify youquote properly.
When you have finished editing, selectSendto deliver your reply.

SelectReply,Reply All, orForward.
SelectHide original messagein the body of your email.
You should seeShow original message.

you could now compose your reply.




