Sync Calendar, Tasks and Contact - M365/Google

[PG1]

I currently use the Windows Mail app because it gives me everything in one solution but I know that it is going to be replaced.  

I can link and unlink inboxes, I can see all my calendars, tasks and contacts synced.  I did add my outlook account to see how that would work, and I would love to move to Thunderbird.  If it can't be considered by the Thunderbird developers could someone else look at this.  

I am looking for desktop solutions that give me the same functionality.

Thanks

[Jon]

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