There is a setting in Thunderbird for the startup page. This is wonderful because I can basically use my favorite Firefox New Tab extension, like you see in the attached screenshots below. The problem is that, I cannot close the message panel to get back to my favorite home page, and even worse, even if I did, the home page doesn't load back up. Instead, a blank black screen will be loaded. I think adding this feature, from a software development perspective, is relatively cheap, but from a feature perspective, it is very eye catching!!
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