In order to access your Lesley email, OneDrive, SharePoint sites, etc., go to:
You will sign in with the full email address as your username, and the same password that you use for LOIS or myLesley. For example, if your username for your other accounts or network access is tteapot, then your Lesley email username is email@example.com.
Please note that you will have to set up your Office 365 email account with multi-factor authentication. Please see these Office 365 Multi-factor Authentication articles for more information.