MICROSOFT 365 STORAGE INTELLIGENCE · FREE SCAN
Connect once, read-only. TSO maps every SharePoint site, OneDrive, mailbox and Teams channel in your tenant — exposing exactly what is inflating your bill and feeding stale data to your Copilot agents. No changes. Just clarity.
Avg annual savings found
Items scanned per tenant
Zero tenant changes
To your first insight
Most M365 tenants sit on years of digital clutter. It costs money today — and it costs credibility tomorrow, the moment Copilot starts reading it.
Annual storage overage uncovered in a single real tenant scan.
Of M365 content has not been accessed in over 12 months.
TSO authenticates via Microsoft Graph with read-only delegated permissions. It never writes to your tenant, never deletes a single file and never stores your data beyond the session. You get the full picture — we keep nothing. Your IT team can verify every permission requested before connecting.
Four workloads and two intelligence layers, combined into one complete, costed picture of your M365 storage health.
Every scan is stored in your history. Run a deep scan today, make changes, run another next month, and see exactly how much storage you reclaimed and how far your recommendation count dropped. Export any scan as a PDF report or Excel workbook straight from the list.
Scan history
PDF and Excel
Track progress
The overview breaks your total storage across all four workloads — SharePoint, OneDrive, Exchange and Teams — alongside total items scanned and recommendation count. In this real scan: 32 TB total, 482,636 items examined and 142 actionable recommendations generated automatically.
4 workloads
142 recommendations
Minutes to run
Every SharePoint site is listed with its exact storage size, library count, creation date and last-modified date. A site like Retired Brand Assets — 2.3 TB, last touched in 2020 — stands out instantly. These are the sites IT forgot existed, and the ones Copilot reads every time someone asks a question.
Modified 2019-2021
2 TB+ per stale site
Sortable and exportable
TSO lists every mailbox — user, shared and distribution — with primary size, archive size, archive status and last activity. Distribution groups like Engineering All at 31.7 GB are often invisible until you look. Find inboxes growing with no archive policy and shared mailboxes nobody owns any more.
Primary + archive
Shared and distribution
Export to Excel
Sites with no owner have nobody responsible for their content, access or lifecycle. TSO flags every ownerless SharePoint site with its storage size and last-modified date so you can assign owners or trigger an archive review. In this tenant: 102 ownerless sites, including Logistics Wiki at 2.3 TB and Tax Documents at 2.0 TB.
No assigned owner
Governance risk
102 sites flagged
Every finding becomes a recommendation with a priority score, the target location, a category such as Archive or Review candidate, estimated GB savings and a suggested action. Items like the Logistics Wiki — not modified in 79 months with no listed owner — score maximum priority. Filter, sort or export the full list as a workable plan.
Priority scored
Est. GB savings
Export action plan
The Storage Economics module connects your findings to your Microsoft 365 bill. Enter your licensed user count and average storage rate, and TSO calculates your current annual overage and projects three cleanup scenarios. In this real tenant: $66k a year overage — conservative cleanup saves $11k, the expected outcome $18k, aggressive cleanup $25k a year.
$66k/yr overage
Up to $25k saved
3 scenarios
From stale content and ownerless sites to cost overruns and Copilot quality risks — surfaced across all four workloads.
No agents to install, no professional-services engagement. You connect, we scan, you act.
Grant read-only Microsoft 365 access in under 30 seconds via standard OAuth consent. No admin agent to install and no firewall rules — just the standard Microsoft permissions flow.
TSO runs a deep scan of every SharePoint site, OneDrive, Exchange mailbox and Teams channel in your tenant, returning full workload breakdowns in minutes.
Download your prioritised action plan — estimated savings per item, archive recommendations and your total annual overage — as a PDF report or a working Excel workbook.
Know exactly what your storage costs, what is making Copilot unreliable and what to do about it — in minutes. Free, no credit card required.
Read-only · no data stored · nothing modified in your tenant
