Update: in compose window, the TOOL menu item has Inbox under it- and address book !!! In Inbox view, Tools is totally different and does not have address book !!! messy. this area needs improving. Key use case: OPTION TO SWITCH TO INBOX IS CRITICAL AND SHOULD BE ON EVERY WINDOW AND IN THE SAME PLACE !! Thanks.

Is mac that different? I have never seen a Window option on a menu bar. The screenshot looks alien to Thunderbird - but that's just my opinion as one who uses Windows and Linux.

Hi David. Yes it's authentic. And TB on Mac has always had a very useful feature: on Window menu there's INBOX and ADR BOOK. In new version it's revamped and a goulash.

Thanks for sharing that. I enjoy learning new stuff.  :)

Now it's showing up (see attached) Before this version it always showed up.