outook365

Hi I am using Outlook 365 and current Mailbox Size is at 90GB 1. Can i split the mailbox year wise and attach to outlook? The way we do with .pst in windows 2. If the above is not possible then how do i manage the Mailbox size? Please advice

I have need to setup my Mac with Windows recently. For email I installed Outlook with my Office365 license. I discover various options, one that in my case was missing a way to "confirm delivery receipt and read receipt". So using the same email account, iCloud, on Windows I can use that option...