Opera Software
  1. Toolbars
  2. Menus
  3. Panels
  4. Speed Dial
  5. Bookmarks
  6. Widgets
  7. Notes
  8. Opera Link
  9. Content blocking
  10. Fraud Protection
  11. BitTorrent
  12. Display modes
  13. Developer tools
  14. Preferences
  15. Advanced Preferences
  16. Skins
  17. Keyboard shortcuts
  18. Using the mouse
  19. E-mail and news
  20. Feeds
  21. Chat
  22. Dialogs
  23. Backing up Opera

Programs

Preferences > Advanced > Programs

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Choose which programs Opera should use to handle specific protocols.

Protocol manager

You can create your own list of programs to launch when executing particular protocols in Opera. The default list includes:

Protocol Purpose
mailto Choose which application Opera should use for e-mail; Opera's own built-in client, the default e-mail client on your computer, or a specific other e-mail client.

Source viewer

The source viewer is the program you want to launch when you select View > Source or press Ctrl+U to see the source of a Web page.

By default, Opera will use its own built-in source viewer.