Microsoft 365 E3
Microsoft 365 E3 is for larger organisations: Office apps, email with a 100 GB mailbox, Intune, Entra ID P1, Windows Enterprise and compliance tools such as eDiscovery and data loss prevention (DLP), with no user limit.
- Desktop Office apps
- Exchange with a 100 GB mailbox and archiving
- Intune and Entra ID P1
- Windows Enterprise E3
- Purview: DLP, eDiscovery, retention policies
Who it is for
For organisations with more than 300 users or compliance needs beyond Business Premium.
When to look at another plan
For up to 300 users, Business Premium usually covers what you need at a lower cost.
With ITHACA you get
- Activation and security setup (MFA) from day one
- Email and file migration with nothing lost
- Support from an engineer, in Greek or English
- A free review of your current invoice, from any provider
| Option | ITHACA indicative price Annual commitment · + VAT | incl. 24% VAT | Monthly subscription | Confirm this price |
|---|---|---|---|---|
| With Teams | 32.11 € | 39.82 € | — | Confirm price |
| Without Teams, EEA | 25.81 € | 32.00 € | — | Confirm price |
Frequently asked questions
E3 or Business Premium?
Up to 300 users, Business Premium includes more security (Defender for Business) at a lower price. E3 is needed above 300 users or when you want Windows Enterprise and advanced compliance.
Other plans
Prices are indicative, per user per month, excluding VAT. Greek VAT of 24% is added on the invoice for businesses based in Greece; for other countries VAT is set out in the quote. The final price is confirmed in a written quote via the form. Prices may change without notice, for example when Microsoft changes its price list. Microsoft list prices as checked on 21 October 2026, List price source.
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