How can I transfer the contents of email folders from one Yahoo.com address to another?

I have used lots of Yahoo.com addresses for different business purposes, and now want to combine them into one, so that I don't have to check each address daily and still not lose the contents of folders of the obsolete addresses.

e-mail them from the old address to the new one.

It appears that the question period has expired. If you have received an answer that meets your needs, _please_ choose one of those as a 'best answer' as soon as you can; otherwise, this question will go to an automatic vote. If you haven't received a good answer for your question, you may want to consider the following,

1) Remove this version of your question and re-post your question. Newer questions get more activity on Yahoo! Answers than old ones.
2) If you do re-post your question, consider why it wasn't answered the first time. Could it be more specific? Could it be worded better? Were there grammatical or spelling errors? Was it in the best category? Can you provide more helpful details?

If it doesn't seem likely that re-posting your question will help you, then here's a listing of my favorite 'answer sites'. Maybe one of them will help you.

Answers.com http://www.answers.com/
Bartleby http://www.bartleby.com/
Yahoo Reference http://education.yahoo.com/reference/......
HowStuffWorks http://www.howstuffworks.com/
Wikipedia http://en.wikipedia.org/wiki/main_page.....

Since I really haven't answered your question, it is not necessary to give me any points. Regards.

If this is for business, you may want to consider upgrading to Yahoo! Mail Plus. It's $19.95 per year per account, and you can check the messages for all accounts at the same time, as well as leave a copy of the message in your regular email accounts. See the link below for more details.