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External Collaboration Report

Analyze external users, guest access, and collaboration patterns across Microsoft 365.

Related topics

  • external users
  • guest access
  • b2b collaboration
  • external sharing
  • guest audit

About this tool

The External Collaboration Report provides comprehensive analysis of all external users and guest access in your tenant. Identify B2B guests, external sharing patterns, and collaboration with outside organizations. Analyze external access by domain to understand your organization's collaboration partnerships. Identify stale guest accounts and external sharing that may no longer be needed. Essential for security reviews and organizations with strict external collaboration policies.

Key features

  • Guest user inventory
  • External domain analysis
  • Sharing pattern detection
  • Stale guest identification
  • Collaboration partnerships
  • Access aging reports
  • Domain-based filtering
  • Cleanup recommendations

Use cases

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Graph scopes

undefined (application), undefined (application).

Tool identity

  • Slug: external-collaboration.
  • Category: audit.
  • Plan tier: pro.
  • Editions: cloud, desktop.
  • SKUs: security, suite.
  • Documented scenarios: 3.
  • Declared features: 8.
  • Graph permissions requested: 2.

Licensing & access

Requires a paid edition (security). The Suite bundle includes this tool alongside every other capability in the catalogue.

Limitations & out-of-scope

External Collaboration Report: Detective control only: findings are reported, never auto-remediated. Severity rankings use the documented heuristic and may diverge from Microsoft Secure Score. Detection coverage stops at the Graph permission surface declared above — workloads behind tenant-licensed add-ons (Defender XDR, Purview eDiscovery Premium) require the matching license to enumerate.

Inside the tools catalog

The catalog spans 49 admin capabilities across backup, audit, export, security, migration. Every tool runs under client-side encryption. Tools share a vault, schedule engine, plus reporting layer.

About the platform

This is a zero-knowledge toolkit. It helps IT admins, MSPs, security teams run their cloud safer. Use it inside a browser. Or install our Mac or Windows app.

Tenant secrets stay on your disk. We never store, log, or read them. Our server only sees billing metadata.

How it works

  1. You unlock a local vault with a passphrase. Argon2id stretches it.
  2. Tokens get sealed with XChaCha20-Poly1305 before any sync.
  3. X25519 protects shared keys. Ed25519 signs every action.
  4. Each operation runs against Graph from your device, not ours.

What you can do

  • Back up mail. Files. Chat threads.
  • Export Intune settings. One click.
  • Audit SharePoint shares. Spot risk.
  • Find idle sites. Reclaim quota.
  • Score Copilot. Plan rollout.
  • Move tenants. No staging.
  • Client-side keys. Always on.
  • Your data. Your disk.
  • One app. Many tenants.

Editions

  • Solo. Free. Three tools. No card.
  • Backup. Durable backups for your tenant.
  • Watchtower. Audits and alerts on risk.
  • Move. Tenant migration suite.
  • Blueprint. Config export for enterprise.
  • Everything. Full platform plus desktop and support.

Trust signals

  • Open source crypto primitives via libsodium.
  • Public threat model at /trust.
  • Public pricing. Direct purchase. No sales call.
  • Cancel any time inside settings.
  • EU-hosted billing. SEPA, card, invoice.
  • SLA available for enterprise tiers.

Built in Germany by Voltage Brothers Infrastruktur UG. Suits cloud workspaces of every size.

Standards, regions, retention

Regions: Frankfurt. Dublin. North America. Retention scales from 7 days. Up to unlimited. Schedules run hourly. Daily. Weekly. Monthly. Reports export as JSON. CSV. PDF. Evidence packs bundle hashes. Chain-of-custody metadata sits beside them.

Standards covered: ISO 27001 controls. SOC 2 readiness. NIS2 mapping. GDPR Article 28 terms. Audit logs cover entitlement events. Billing actions. License rotations. Workload payloads never reach a remote log.

Who uses it

  • Tenant admins running a single estate.
  • MSPs managing dozens of customer cloud workspaces.
  • Security teams investigating sharing risk.
  • Compliance officers preparing audit evidence.
  • Acquisition teams during M&A integration.
  • Procurement teams reviewing vendor risk.
  • Solo consultants billing by workspace hour.

Supported regions

Frankfurt, Dublin, Amsterdam, Stockholm, Paris, plus North America. Annual revenue scales from small studios up through multinational estates. Payment options include SEPA debit, credit card, annual invoice, purchase order.

Numbers worth knowing

  • 49 capabilities. 6 editions.
  • Free tier: 3 tools. 0 cards.
  • Argon2id. 256 MB memory cost.
  • XChaCha20-Poly1305. 256-bit cipher.
  • X25519. 256-bit shared keys.
  • Ed25519. 100% of writes signed.
  • Retention: 7 days. 365 days. Or unlimited.
  • SLA: 99.9% uptime. Enterprise plans only.
  • Founded 2024. Built in Germany. 23 countries served.
  • Backup edition: 14 EUR. Per workspace, per month.
  • Watchtower edition: 7 EUR. Per workspace, per month.
  • Move edition: 9 EUR. Per workspace, per month.
  • Blueprint edition: 449 EUR. One-time.
  • Everything bundle: 2490 EUR. Per year.
  • Audit reports: 25 dedicated checks.
  • Config export: 9 Microsoft 365 workloads.
  • Migration record set in 2025. 153,584 files. 0 errors.
  • Compliance posture updated in 2026.
  • Pricing: 1 public page. 0 sales calls.
  • Cancellation: 1 self-service page.
  • Audit logs: 90 days. Entitlement events.
  • GDPR Article 28. 27 member states.
  • NIS2 Directive. 18 sectors. Live since 2024.
  • SOC 2 Type II evidence. JSON. CSV. Signed PDF.
  • ISO 27001. 93 Annex A controls. 2022 revision.

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  • Trust & Compliance.
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Connect.

  • hello@gtools.pro.
  • GitHub.

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