This add-on is compatible with Firefox 37+ and Firefox OS 1.1. To test apps with Firefox OS 1.2+, please use WebIDE built into Firefox! For more info, see the WebIDE MDN documentation. This add-on is large (50-70MB), because it bundles a complete simulation of Firefox OS, including its default apps.
Best Answer: With the all-new Yahoo Mail, there is no option to import pst files. However, in the Yahoo Mail Classic the only thing you can import are contacts in the address books. Here are the steps to do import/export of contacts: 1. Choose a program to import contacts from: Yahoo! (.CSV file)
Send an Attachment with Yahoo! Mail Classic. To send any file as an attachment with an email in Yahoo! Mail Classic. 1  While composing a message, follow the Attach Files link.2  Select Browse to select the file you want to attach on your computer. 3  Click Attach Files.end an Attachment with Yahoo! Mail Classic. To send any file as an attachment with an email in Yahoo! Mail Classic. 1  While composing a message, follow the Attach Files link.