Which version do I need?
Want full coverage and scheduled backups?Choose Pro. It includes the EWS version free, in the same app.
Only need EWS, at the lowest price?Choose Standard. Covers archive, public folders, Groups and on-premise Exchange, with no scheduling.
Also need to import PST back to Office 365?Choose the Bundle.
Choose your plan
Get flat 30% Off till 31st October Use code: Oktoberfest30
Standard · EWS based
Office 365 Backup
Best for: a lower price when EWS alone covers your needs.
- Primary & shared mailboxes
- Archive mailboxes & public folders
- Office 365 Groups
- On-premise Exchange Server
- Scheduled jobs
Secure checkout via 2Checkout
Best value · Includes EWS version FREE
Pro · Microsoft Graph API based
Office 365 Backup Pro
Best for: full coverage with scheduled Graph backups, all in one app.
- Graph: primary & shared mailboxes
- Graph: schedule backup jobs
- Free EWS version: archive, public folders, Groups, on-premise Exchange
- One interface for both
Secure checkout via 2Checkout
Need more than 500 mailboxes, or a custom quote? Email sales@nucleustechnologies.com or call 1-866-348-7872
We accept: 
What's different
| Feature | Standard (EWS) | Pro (Graph) | Bundle |
|---|---|---|---|
| Primary & shared mailboxes | ✓ | ✓ | ✓ |
| Archive, public folders, Groups, on-premiseGraph doesn't support these yet | ✓ | ✓via free EWS version | ✓ |
| Schedule backup jobs | ✕ | ✓ | ✓ |
| Import PST to Office 365 | ✕ | ✕ | ✓ |
| Microsoft Graph (ready for EWS retirement) | ✕ | ✓ | ✓ |
| Largest tier / validity | 500 · 1 yr | Unlimited3 yrs on Unlimited | Unlimited3 yrs on Unlimited |
Frequently Asked Questions
Does the 30% code stack on the sale price?
Yes. Oktoberfest30 takes 30% off the sale price until 31 October 2026.
What does renewal cost?
Renewal is 20% off.
Why does Pro include EWS?
Microsoft Graph doesn't support archive mailboxes, public folders or Groups yet, so Pro buyers get the EWS version free in the same app.
EWS vs Graph
Both are ways software reads your mailboxes. EWS is Microsoft's older connection and is being retired in Exchange Online (on-premise Exchange is not affected). Graph is the modern, recommended one, but it can't reach archive mailboxes, public folders or Groups yet. That's why Pro includes EWS free: both run in one interface, so Graph covers primary and shared mailboxes and EWS covers the rest.
1 Oct 2026 · EWS switch-off starts 1 Apr 2027 · full EWS shutdown
