Hi. I use Apple Mail for my 365 Outlook email account. Since changing to a new M1 MacBook Air and Big Sur if I send an email direct from Apple Mail it does not show up at all in the 365 Outlook sent box. It shows up in the Apple Mail sent box on my Mac but only until the Mac synchs to 365 Outlook. If I send an email from my iPhone it all works fine and the sent emails gets stored straight away in the 365 Outlook sent box. Any help would be appreciated please!