Yahoo has a free email service. Sometimes you need to send email from your yahoo mail account. After send your email you need to confirm that your email successfully send from your yahoo mail account. Learn how to you know your email successfully send from your yahoo mail account.
1. Login your yahoo account using your yahoo account email address and password.
2. You will see your yahoo email account mail inbox with your incoming email.
3. Click Send button to check your previous send email. This button you see left sight behind of your yahoo mail Inbox button.

4. You will see your previous send all email list.
Using this way you can confirm that your sending email successfully send.