General features | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Maximum Number of Users | Unlimited | Unlimited | Unlimited |
Mailbox Disk Storage Per User | 25GB | Unlimited--25GB in primary mailbox, unlimited storage in user's in-place archive | 1GB |
Microsoft Exchange Online Protection for real-time multi-layered anti-spam and multi-engine anti-malware protection | ![]() |
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24/7 Microsoft IT-level phone support | ![]() |
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Planning and Deployment | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Hybrid deployment supported | ![]() |
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IMAP migration supported | ![]() |
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Cutover migration supported | ![]() |
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Staged migration supported | ![]() |
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Permissions | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Role-based permissions | ![]() |
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Role groups | ![]() |
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Role assignment policies | ![]() |
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Message Policy, Compliance & Recovery | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Exchange online mailbox archiving | ![]() |
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On-premise mailbox cloud-based archiving | ![]() |
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Retention tags and retention policies | ![]() |
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IRM using Windows Azure AD RM | ![]() |
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IRM using Windows Server AD RMS | ![]() |
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In-Place Hold for preserving deleted and edited mailbox items | ![]() |
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In-Place eDiscovery for supporting compliance through search tools | ![]() |
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Transport rules | ![]() |
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Data loss prevention (DLP) policies for added compliance enforcement | ![]() |
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Journaling | ![]() |
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Anti Spam / Anti-Malware Protection | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Built-in anti-spam protection | ![]() |
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Customization of anti-spam policies | ![]() |
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Built-in anti-malware protection | ![]() |
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Customization for anti-malware policies | ![]() |
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Admin management - quarantine messages | ![]() |
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End-user self-management - quarantine messages | ![]() |
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Mail Flow | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Custom routing of outbound email | ![]() |
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Secure messaging with a trusted partner | ![]() |
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Conditional email routing | ![]() |
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Adding a partner to an inbound safe list | ![]() |
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Hybrid email routing | ![]() |
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Recipients | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Disk space capacity alerts | ![]() |
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MailTips | ![]() |
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Delegation access | ![]() |
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Inbox email rules | ![]() |
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Connected accounts | ![]() |
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Inactive mailboxes | ![]() |
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Offline address book | ![]() |
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Address book policies | ![]() |
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Hierarchical address book | ![]() |
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Global / Local address lists | ![]() |
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Distribution groups | ![]() |
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Global external contacts | ![]() |
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Universal contact card | ![]() |
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Contact linking with social networks | ![]() |
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Resource mailboxes | ![]() |
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Conference room management | ![]() |
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Out-of-office replies | ![]() |
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Calendar sharing | ![]() |
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Reporting Features | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Microsoft 365 admin center reports | ![]() |
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Excel reporting workbook | ![]() |
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Web services reports | ![]() |
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Message trace | ![]() |
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Message delivery reports | ![]() |
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Auditing reports | ![]() |
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Unified messaging reports | ![]() |
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Sharing & Collaboration | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Federated sharing | ![]() |
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Site mailboxes | ![]() |
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Public folders | ![]() |
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Email Clients & Mobile Devices | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Microsoft Outlook | ![]() |
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Outlook web app | ![]() |
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Exchange ActiveSync | ![]() |
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IMAP | ![]() |
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POP | ![]() |
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SMTP | ![]() |
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EWS application support | ![]() |
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Macintosh clients | ![]() |
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Voice Message Services | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Voicemail | ![]() |
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Third-party voicemail interoperability | ![]() |
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Lync integration | ![]() |
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High Availability and Business Continuity | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Mailbox replication at data centers | ![]() |
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Deleted mailbox recovery | ![]() |
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Deleted item recovery | ![]() |
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Interoperability, Connectivity & Compatibility | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Lync presence information in OWA | ![]() |
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Sharepoint interoperability | ![]() |
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EWS connectivity support | ![]() |
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SMTP relay support | ![]() |
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Management & Administration | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Microsoft 365 portal access | ![]() |
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Microsoft 365 admin center access | ![]() |
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Exchange admin center access | ![]() |
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Remote windows powershell access | ![]() |
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ActiveSync policies for mobile devices | ![]() |
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Usage reporting | ![]() |
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Add-ins and Resources | Exchange Online Plan 1 | Exchange Online Plan 2 | Exchange Online Kiosk |
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Outlook web app web parts | ![]() |
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Outlook add-ins and Outlook MAPI | ![]() |
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