Can documents be sent via e-mail using Mozilla Thunderbird?

How do I configure this?

Sure, make Thunderbird your default mail client and LO will initiate an email message with your document as an attachment when you select File-Send-Document as Email, or one of the other options.

To make Thunderbird your default email client - in Thunderbird select Tools-Options and on the Advanced tab there is a check box to check on start-up if Thunderbird is the default.

Easy, Go to Control Panel…internet options…click programs…in E Mail select your E mail client New Groups select your E mail client…done