Interestingly, the cabin crew were individually asked by email if they wished to keep their mailboxes. As the company have been told in no uncertain terms by the cabin crew that they do in fact wish to keep their mailboxes, the company have now backtracked from their plan to remove said crew mail boxes. One can assume the result was simply because the cabin crew were vociferous enough about the issue, it now seems the company have moved onto target number two, the pilots.
However, It also seems like they have learned well from their past mistake of asking people individually.
On the basis one should never ask the question if one may not like the answer, they have taken the disingenuous step of avoiding asking all crew by email which most would have seen and replied to, or Comply365 which all must acknowledge, but instead have subtly made it a small paragraph in the weekly propaganda. Anecdotally, many just delete this propaganda email when it arrives, and in so doing, the company can simply hide behind the "Well we did ask you", other than the fact this thread brings such deviousness to light.
Therefore, if you wish to keep your mailbox, then you will need to be as vociferous as the cabin crew.
To use a well used phrase of days gone by from the old 4th floor: "Please be guided accordingly"