text: First, to answer the question:\n\nGo to your Yahoo Mail account and click on ‘Options’ (to the right, near the top). Under ‘Management’ click on ‘Mail Addresses’, then select the account you are having trouble with (there is probably only one) and select ‘Edit’. Enter your full email address in the box labeled ‘Reply to:’ under ‘Name and Email’ and select ‘Save’ (at the left).\n\n\nAdditional details (since my other answer):\n\nGlad I was able to help. You may want to leave the 'Reply to:' box blank; when someone replies to your email it will still automatically go to you (when you fill in the 'Reply to:' box all replies go to the address entered, but when it is left blank the recipient’s email handler defaults to reply to the sender), and there will be a slightly lessened chance that your emails will sometimes be mistaken for spam and accidentally blocked by some spam filters.