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)
Choose from the export instructions to export your email from your source account to a .pst file. For example, if you have Outlook 2010, choose Outlook 2010: Export Outlook items to a .pst file. Choose from the import instructions (below) in this article to import your email to Office 365. For example, if you have Outlook 2016, choose Outlook 2013 and Outlook 2016: Import Outlook items from a .pst file.