Stop automatically installing the new Outlook

The Windows Mail app will stop receiving and sending email after December 31, 2024.

https://support.microsoft.com/en-us/office/outlook-for-windows-the-future-of-mail-calendar-and-people-on-windows-11-715fc27c-e0f4-4652-9174-47faa751b199

Of course it is the source code because microsoft is moving corporate enterprise customers to the new outlook app by 2029. One source code base for all 5 platforms.

https://techcommunity.microsoft.com/discussions/microsoft-365/outlook-classic-support-until-at-least-2029/4081174

Ok, sure it's the source code, and absolutely nothing to do with the fact their new app is pushing scam ads to the top of my inbox disguised as emails, and selling a subscription to remove them.

I paid for a copy of windows, part of that purchase was the mail app. I want to continue using the app I already paid for, not the new app that wants to charge me to solve a problem Microsoft created.

The way it functions now, I have to manually uninstall the Outlook (New) app every single time I want to open the old mail app, so to return to the topic at hand. As this is my computer, and not Microsofts, how do I stop this so I can use the software I want to use?

Microsoft made it easy for people to just migrate to their new app.

If you don't like their new app, then learn how to migrate to a 3rd party app yourself. But it is YOUR choice to migrate to another 3rd party app because you DON'T like their new offering.

Microsoft killed the windows mail app because they were maintaining 5 completely different source code (outlook for desktop windows/mac/mobile/web and windows mail app). They want to maintain a single source code which is good for the long run. Even large enterprise customers have to migrate by 2029.

Now the issue is that windows 10 comes with Windows Mail app, Windows Calendar, Microsoft People and Microsoft To-Do all preinstalled and fully integrated, and Microsoft on top of that, encourages users to use these apps.

I believe that any newbies are excused for thinking these app being part of the OS, not knowing how to use others, AND let's not forget, Microsoft recommends Microsoft accounts with Microsoft e-mailadresses, so by now intermediate users are also excused.

If you start using the Windows Calendar and Microsoft To-do, you are in serious trouble, as these apps cannot export Events, Tasks and so on, and when you finally find out how to get your data out, you end up with a .PST-file, which most other calendars cannot import, and you need to convert to another format, now even experienced users are excused.

So, I can recommend thinking beyond your own crooked nose, before you start typing.

And that, I assure you, just like many others I will. Idiot move by MS to destroy a good product and replace by something as bad as this.