Message Pane visibility should be remembered per folder

[regs]

Message Pane visibility should be remembered per folder, as in Outlook. And should not be even visible for Spam, Junk, Virus and similar folders by default.

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[MattAuSupport]

I am curious.  Why should it not be shown?

There is no security reason that I can establish for not showing it and not seeing the content of the message makes determining false positive spam mails much harder to determine.

[regs]

Most spam is a fraud or malware. Unless you are a spammer you don't want to click links in spam or open files. Not to say of possibility of some vulnerability.