Customised templates - email & invite

Hi, 

 

I was wondering if there is any information / instructions on how to create customised email and meeting invite templates in Outlook. I'd like to create email / meeting invites with logo and potentially background colour or border etc (designer to advise) for both desktop and mobile usage - ideally this would be available to download in everyone's outlook within the organisation to easily access and use with their own body copy / messaging. 

 

Many thanks, 

Åsa