Quick option to re-open Mailbox window

[FlyingDutchman]

I frequently manage to close the Inbox window because I use keyboard shortcuts all the time and sometimes a ^W will close the Inbox window inadvertently.

TB used to have a shortcut to open a new Inbox window but that option disappeared a few versions back.
That means now I have to quit TB and re-open to get back to the Inbox window with my accounts.
Not the end of the world but a bit of a time waste.

Please bring back the option to re-open the Inbox window when it's closed.

[Jon]

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