best way to migrate from yahoo mail to gmail

i wish i have found this out earlier when i was moving all my mails from yahoo mail to gmail.

i used gmail fetch mail pop3 setting to get mails out of yahoo. but it will only import mails in inbox. which i have to separately import mails in other folders. and there is no way to get sent mails.

later i found out a much easier way. use thunderbird to copy all mails from yahoo to gmail.

you will need to install thunderbird. here:
http://www.mozilla.org/en-US/thunderbird/

then set up IMAP for both yahoo and gmail.
yahoo: http://guillaumeb.com/ym/imap.html
gmail: https://support.google.com/mail/troubleshooter/1668960?hl=en

if you have several folders in yahoo, set them up the same way in gmail.

after set up both account in thunderbird, you might need to leave it alone for some time to download all your yahoo mail.

then inside thunderbird, you can select mails in any folder, right click, and mouse over to "copy to". you'll have gmail corresponded folder to select from the drop down menu.

it's a much faster way than pop3 fetch mail gmail offered. and you can keep your same folder structure.