How do I import my outlook email folders and emails to my yahoo email?

first you have to export your outlook address book to a CSV file. do that from outlook's file %26gt; export %26gt; address book. next you have to import that to your yahoo address book. from your main yahoo mail page click the address tab. then click import/export in the upper-right of the page (if you can't find it, do a text search for "Import/Export"). the rest is easy.