Provide a feature wherein Meeting Appointments or Meetings should pass a None reminder time as None.
When an Appointment or Meeting is sent, the sender has the option to set the Reminder time. By default it's 15 minutes, unless it's an all day event where it's 0.5 days (in Office 2016 at least, I believe this has changed a few times depending what Office version is in use).
When 'None' is used, it doesn't actually send 'None', it uses the recipient's default reminder time, which is 15 minutes.
There is currently no way to send someone a meeting request with no reminder. Worse off, people think the 'None' option works, so they use that and then someone will get an alert at 11:45pm at night for the next day's all day appointment.
Markus Gruber commented
I absolutely agree that the current Outlook behavior should be adopted so that the "none" setting is not overwritten with the recipients settings.
In on premises environments using Microsoft Exchange Server 2007 and newer, this option can be enabled on the server side (Microsoft knowledge base articles 945854 and 4456247).
In Microsoft 365 (formerly Office 365) respectively Exchange Online I am not aware of such a setting.
Adam Fowler commented
I've also noticed and tested this several times - strangely the FIRST time a meeting is sent with 'none' it works, but any other time after that it won't work. I'm not sure if a reboot resets this or it's a timing thing!