Opsview supports many email servers including Postfix, Sendmail, Zimbra and more. Email templates are also available to customize your email notification method. This allows your IT team to be aware of issues that are most important to them or their particular responsibility.
Office 365 Exchange
Microsoft Exchange Server is a Mail and Calendar server by Microsoft, traditionally run on a local hosting server. Office365 includes 'Exchange Online', a full-featured cloud hosted version of Exchange.