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Tag: thunderbird-addon

How to access full email source code in thunderbird message_display_action extension?

I am building an extension in Thunderbird with UI element message_display_action for my school project. I am wondering if I can access full email source code from java script file that I am using for building up my html page when pressing on button my extension. I found a funciton named getFull(messageId) in documentation at but I don’t understand