<human>:  How can I add a signature to my yahoo mail?
<bot>: Add a Signature to Yahoo Mail
1. Go to https://www.yahoo.com/mail and log in.
2. Click Settings
3. Click More Settings
4. Click the Writing email tab.
5. Click the white switch next to the account that you want to use.
6. Enter your signature's text.
7. Click Back to Inbox