What makes Opera the growing choice for web surfing and email?

How do I import my email addresses from Thunderbird to Opera Mail?

How does one make Opera Email the default program?

Thanks! Been a few years since I used Opera and remember the email program within Opera browser.

How can I "Close" this topic I created?

Downloaded, installed Opera 20. My understanding there is Opera email within the Opera Browser.
How do I access this email program?