Microsoft Exchange Online vs IONOS Hosted Microsoft Exchange

Microsoft Exchange Online9.4Visit IONOS Hosted Microsoft Exchange8.0Visit

Higher score Microsoft Exchange Online #1 in Hosted Exchange 9.4/10 Paid ✓ 5 of 5 features Visit Microsoft

vs

IONOS Hosted Microsoft Exchange #9 in Hosted Exchange 8.0/10 Paid ✓ 5 of 5 features Visit IONOS

• Microsoft Exchange Online fits best

  Microsoft-centric businesses needing broad Exchange features

• IONOS Hosted Microsoft Exchange fits best

  Organizations wanting 50 GB Exchange mailboxes

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Side by side

Feature	Microsoft Exchange Online 9.4/10 Visit ↗	IONOS Hosted Microsoft Exchange 8.0/10 Visit ↗
At a glance
Editor score	9.4	8.0
Ranking	#1 in Hosted Exchange	#9 in Hosted Exchange
Best for	Microsoft-centric businesses needing broad Exchange features	Organizations wanting 50 GB Exchange mailboxes
Pricing model	Paid	Paid
Starting price	—	$10/user/mo
Free plan	—	—
Free trial	—	—
Deployment	Cloud, Browser extension	Cloud
Platforms	Web, Windows, macOS, iOS, Android	Web, Windows, macOS, iOS, Android
Support	Phone, Docs · 24/7	Email, Live chat, Phone · 24/7
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Microsoft Exchange Online 5/5 · IONOS Hosted Microsoft Exchange 5/5
Shared mailboxes	✓	✓
Outlook desktop support	✓	✓
Mobile access	✓	✓
Migration tools	✓	✓
Online archiving	✓	✓
Specs
Mailbox storage	50 GB	50 GB
Our review
Pros	Outlook access across web, desktop, and mobile platforms Shared mailboxes, archiving, migration tools, and Graph API access Plan 2 adds built-in DLP and up to 1.5 TB of archive storage	50 GB Exchange mailbox with Outlook desktop and web access Shared mailbox permissions and a 100 GB shared team folder Migration tooling, device sync, and 24/7 expert support
Cons	There is no free plan Advanced storage and DLP features require Plan 2 Some archive capabilities depend on licensing and administrator enablement	The service is paid-only with annual billing Email archiving is a separate compatible subscription The offering centers on Microsoft Exchange rather than broader collaboration software
Our verdict	Microsoft Exchange Online is a cloud-hosted business email and calendaring service for organizations that need custom-domain email, Outlook access, mailbox administration, filtering, archiving, and compliance features. It suits… Read the review →	IONOS Hosted Microsoft Exchange is a managed business email service for organizations that want Microsoft Exchange without operating their own Exchange servers. It combines hosted email with calendars, contacts, tasks, shared mailbox and… Read the review →

Strengths and trade-offs

• Microsoft Exchange Online — where it wins

  • Outlook access across web, desktop, and mobile platforms
  • Shared mailboxes, archiving, migration tools, and Graph API access
  • Plan 2 adds built-in DLP and up to 1.5 TB of archive storage

  Where it doesn't

  • There is no free plan
  • Advanced storage and DLP features require Plan 2
  • Some archive capabilities depend on licensing and administrator enablement

• IONOS Hosted Microsoft Exchange — where it wins

  • 50 GB Exchange mailbox with Outlook desktop and web access
  • Shared mailbox permissions and a 100 GB shared team folder
  • Migration tooling, device sync, and 24/7 expert support

  Where it doesn't

  • The service is paid-only with annual billing
  • Email archiving is a separate compatible subscription
  • The offering centers on Microsoft Exchange rather than broader collaboration software

• Microsoft Exchange Online9.4/10 · Paid

  A broad hosted Exchange service for Microsoft-focused organizations with compliance and migration needs.

  Visit MicrosoftFull verdict →
• IONOS Hosted Microsoft Exchange8.0/10 · Paid

  A focused Exchange service with 50 GB mailboxes, Outlook access, and shared team tools.

  Visit IONOSFull verdict →