The fastest way to access your email account is by signing in online using Office 365 or Outlook on the web.
You can also create a custom email sign-in page, which uses your email's domain name to sign in directly. For example, if your domain is coolexample.com, your custom email sign-in page would be email.coolexample.com.
To create your custom email sign-in page, replace coolexample.com with your domain name. If your domain was amysbarkandwines.net, you'd sign in to your email by entering email.amysbarkandwines.net in your browser (along with your Office 365 sign-in info).