Executive summary
If you want Exchange-class Outlook integration (MAPI/EWS/EAS) and collaboration features without the full Microsoft 365 bundle, SmarterMail delivers at a lower TCO—especially when you don’t need the full Office app suite for every user.
Feature parity where it counts
Outlook-grade protocols: MAPI & EWS for desktop Outlook; EAS for mobile; standards for everything else.
Built-in collaboration: calendars, contacts, tasks/notes, chat & Online Meetings with persistent file storage.
Security: SPF/DKIM/DMARC, greylisting, antivirus, intrusion protections.
Cost control & licensing clarity
MAPI & EWS are server-wide add-ons; EAS is per mailbox—plan exactly what you need instead of paying for unused bundle features.
When Microsoft 365 still makes sense
If you require tight integration with the full Office apps for most users, Microsoft 365’s bundle may be the simpler buy. If your users mainly need email/collab, SmarterMail hosting is leaner.
