Exchange Online Archiving
Unlimited archive mailbox for compliance retention
Organizations on Plan 1 needing unlimited email archiving
Tier comparison
Where EO Archiving sits in the addon family
- +Defender for Cloud Apps
Available add-ons
Extend EO Archiving with these add-ons
Each add-on stacks on top of your base plan. Pricing is per user/month.
Cloud PBX add-on — make/receive PSTN calls via Teams
- Teams Phone System
- Auto Attendant
- Call Queues
Cloud PBX + domestic calling plan bundle
- Teams Phone System
- Calling Plans
- Auto Attendant
AI assistant in Word, Excel, PowerPoint, Outlook, Teams
- Microsoft 365 Copilot
- Copilot in Word
- Copilot in Excel
Enterprise EDR, threat hunting, automated investigation
- Defender for Endpoint Plan 2
- Defender for Business (EDR)
- Threat Analytics
Advanced email threat protection — attack simulation, automated remediation
- Defender for Office 365 Plan 2
- Attack Simulation Training
- Automated Investigation & Remediation
Identity Protection, PIM, risk-based conditional access
- Microsoft Entra ID P2
- Identity Protection (Risk-based)
- Privileged Identity Management (PIM)
Advanced endpoint management — Remote Help, EPM, Cloud PKI, EAM
- Microsoft Intune Plan 2
- Intune Endpoint Privilege Management
- Intune Enterprise App Management
eDiscovery Premium, Insider Risk, Communication Compliance, Customer Key
- Purview eDiscovery (Premium)
- Purview Insider Risk Management
- Purview Communication Compliance
Employee experience — Connections, Goals, Insights, Learning, Pulse, Amplify
- Viva Connections
- Viva Goals
- Viva Insights
Feature Map
What you get with EO Archiving
1 included · 0 not included. Click any category to jump.
Licensing & eligibility
Buying & licensing
Buying rules and eligibility requirements specific to EO Archiving.
- Commitment
- Annual commitment, billed monthly is the listed rate. Month-to-month is ~20% higher.
- Volume discounts
- Available through CSP partners at 250+ seats.
Full feature list — EO Archiving
| Feature | Status | Details |
|---|---|---|
| Email & Calendar (1/1) | ||
Exchange Online Archiving Unlimited archive mailbox with auto-expanding for compliance retention | ✓ | — |
Ready to deploy? Our Microsoft 365 migration services include license provisioning, policy setup, and full data migration from any source platform. Check the licensing guide for detailed add-on prerequisites.
Cost Calculator
EO Archiving pricing calculator
| Users | Monthly Cost | Annual Cost |
|---|---|---|
| 5 users | $15 | $180 |
| 10 users | $30 | $360 |
| 25 users | $75 | $900 |
| 50 users | $150 | $1800 |
| 100 users | $300 | $3600 |
| 150 users | $450 | $5400 |
| 200 users | $600 | $7200 |
| 300 users | $900 | $10800 |
| 500 users | $1500 | $18000 |
| 1000 users | $3000 | $36000 |
Compare EO Archiving vs Alternatives
Business Standard
M365 E3
M365 E5
FAQ
Questions about EO Archiving
What is Exchange Online Archiving?+
What's the difference between EO Archiving and Defender Cloud Apps?+
Should I downgrade to Defender Office P1 to save money?+
Can I mix EO Archiving with other Microsoft 365 plans in the same tenant?+
What is Exchange Online Archiving?
Exchange Online Archiving is a addon Microsoft 365 subscription plan priced at $3/user/month (annual commitment). It supports unlimited users and includes Unlimited archive of cloud storage per user.
Best for: Organizations on Plan 1 needing unlimited email archiving
This plan includes 1 features across 1 categories including Email & Calendar.
Buy through Medha
Get Exchange Online Archiving — save 5%
Purchase through Medha Cloud and get partner pricing, free migration assistance, and priority support.
Compare Plans
Licensing Guide
Beyond Free Tools
Enterprise Cloud & IT Services
From Microsoft 365 migrations to fully managed infrastructure — we handle every layer of your IT stack.
Migration Tools We Use
Enterprise-grade tooling for every platform
- BitTitan MigrationWiz— Cloud-to-cloud email & data
- Microsoft Exchange Hybrid— On-prem to Exchange Online
- ShareGate Desktool— SharePoint & OneDrive
- Microsoft Mover.io— Google Drive to OneDrive
- Entra ID Connect— AD sync & hybrid identity
- PowerShell & EWS API— Automation & bulk ops