Please stop force installing new Outlook when it's not even functional yet

For the love of god Microsoft pleas please stop force installing this unfinished alpha software on my computer, it is not 2005 anymore, the ability to combine/link inboxes is a MANDATORY feature of an email client and has been for years hence why the superior Windows Mail client has it.  Do you really want me to switch to a third part mail client this badly? 😞