You DO NOT write to Yahoo here. You've just made your email address available to thousands of people on a public forum. Yahoo doesn't give out email addresses. We create our own user ID's for our email. If it's too long, it won't allow that name, so we try another until we get one that works or follows the STATED requirements. Your question isn't very clear (first you have an email address, then it's not allowed, then you have it). Yahoo probably isn't asking you for confirmation. You should be able to just log in with your user name (mnqpln) and the password you chose.