Automatically Add Your Signature to Yahoo! Mail Classic Emails
To add your signature to outgoing Yahoo! Mail Classic messages automatically:
- Select Mail Options from the Yahoo! Mail Classic navigation bar.
- Follow the Signature link.
- Make sure Add signature to all outgoing messages (below the text of your signature) is selected.
- Click Save.
Yahoo! Mail Classic will now append your signature by default, but you can override this setting for individual messages by un-checking Use my signature on the message composition screen.

