In MSP Mail we do have a lot of helpful documentation but one request I see a lot of is to have a guide for the end user portal. Something short and concise that users can refer to if they are unsure how to navigate and take advantage of the different features. As I have had this quite a few times I created a guide that you can send to your end users. This covers everything in the user portal so feel free to direct customers to it or use it to create your own internal documentation.