What year was the first email sent?

Why did my email resend a message I sent a year ago?

• I sent an email about a year ago and the receiver responded. But this morning my email sent that email again but I didn't send it.

• Answer:

  I've completed my investigation and I have performed some maintenance to your account which may resolve this issue for you. The fix I've applied may take up to 24 hours to complete. If you use your Yahoo Mail account with an email application or mobile device, you should also remove it from there, as one of these could also be the culprit for this behavior. You can add it back once you've removed it. If you still have this problem after all that, you should contact us directly for more help. You can find us through the contact form at: http://io.help.yahoo.com/contact/index?locale=en_US&y=PROD_MAIL&page=contact I hope this has helped you!