Contact

OnChain Systems UG (haftungsbeschränkt)

Teckstr. 60, 73207 Plochingen

+49 176 47722530

info@onchain-systems.com

© 2026 OnChain Systems

Industries

  • Service & maintenance companies
  • Property management
  • Law & tax firms
  • Custom machinery & contract manufacturing
  • Engineering & planning practices
  • Custom project

More

  • Industries
  • Free check
  • Worked example
  • Public funding
  • Services
  • Integrations
  • Use Cases
  • Blog
  • About
  • Contact
  • Partners
  • Legal Notice
  • Privacy Policy
OnChain Systems
Solutions
Industries
BlogAboutContact

Service & maintenance companies

Job · Callout · Inspection report

Property management

Building · Owner · Meeting · Statement

Law & tax firms

Matter · Deadline · Document · File

Custom machinery & contract manufacturing

Enquiry · Costing · Service job · Documentation

Engineering & planning practices

Project · Tender · Deadline · Variation

Custom project

Your routine · Your words · Your programs

All industries at a glance

AI Agents & Automation

Autonomous agents & automated workflows

Offline LLMs

GDPR-compliant AI without the cloud

AI Assistants

Knowledge assistants & service bots (internal & external)

Document Intelligence

Extraction & processing

Solutions in Detail
Service & maintenance companiesJob · Callout · Inspection report
Property managementBuilding · Owner · Meeting · Statement
Law & tax firmsMatter · Deadline · Document · File
Custom machinery & contract manufacturingEnquiry · Costing · Service job · Documentation
Engineering & planning practicesProject · Tender · Deadline · Variation
Custom projectYour routine · Your words · Your programs
All industries at a glance →
AI Agents & AutomationAutonomous agents & automated workflows
Offline LLMsGDPR-compliant AI without the cloud
AI AssistantsKnowledge assistants & service bots (internal & external)
Document IntelligenceExtraction & processing
Solutions in Detail →
Service & maintenance companiesJob · Callout · Inspection report
Property managementBuilding · Owner · Meeting · Statement
Law & tax firmsMatter · Deadline · Document · File
Custom machinery & contract manufacturingEnquiry · Costing · Service job · Documentation
Engineering & planning practicesProject · Tender · Deadline · Variation
Custom projectYour routine · Your words · Your programs
All industries at a glance →
AI Agents & AutomationAutonomous agents & automated workflows
Offline LLMsGDPR-compliant AI without the cloud
AI AssistantsKnowledge assistants & service bots (internal & external)
Document IntelligenceExtraction & processing
Solutions in Detail →
BlogAboutContact

Integration

Microsoft 365,
where the work already sits

Outlook, SharePoint and Teams are long since in place and paid for in most businesses. The inbox is in Outlook, the documents are in SharePoint, and between the two sits a person doing the sorting. That route can be shortened without anyone having to learn something new.

Request the free checkAll integrations

This stays

What your application keeps doing

  • Outlook as the mailbox, with the folders and rules that already exist.
  • SharePoint and OneDrive as the store. We do not build a second document store.
  • Teams as the place people talk. We put nothing alongside it that also sends messages.
  • Your existing permissions. Anyone who may not open a document does not get it quoted by us either.

We do not replace anything

This is not a replacement and not a migration. Your application stays authoritative for its data and keeps its interface and its workflows. We sit alongside it and take over the routes that today run by hand between applications. Switch us off tomorrow and your application carries on exactly as before.

The boundary

Where we come in

Microsoft ships built-in tools for a lot of this. They help where a task looks the same for every business. They do not help where your workflow is your workflow.

Matching incoming post to the case

Not to a folder, but to the property, the matter or the order. That takes your master data, and it rarely sits in Microsoft 365.

An assistant that answers from your own store

With the source, so it can be looked up, and with a no when there is nothing there. What is saved is the reference; the file stays in SharePoint.

Workflows across application boundaries

A workflow rarely ends in Microsoft 365. It starts there and carries on into the trade software, the accounting package or the inspection software.

Traceability rather than automatic answers

Under every suggestion you see which rules applied. Below the threshold the field stays empty rather than being guessed.

Technically

How we connect

Microsoft 365 has a documented interface for reading mailboxes, files and calendars. We use it with credentials scoped as tightly as possible, and we use it read-only.

  • Dedicated credentials with exactly the rights the workflow needs, and no more.
  • The permissions from your directory still apply. We do not work around them.
  • No second store. What is saved is the reference to the document, not the document.
  • Where the content may not leave the building, the language model runs on your own server rather than at a provider.

Objections

What you are wondering now

So does everyone get to see everything?
No. Permissions come from your directory and still apply. Anyone who may not open a document does not get it quoted either.
Does this send our email to an AI provider?
Only if you want it to. Where it must not, the language model runs on a machine in your building, and then no request leaves your network.
Could we not build this with the built-in tools?
For simple rules yes, and then you should. It carries as far as the workflow stays inside Microsoft 365. As soon as your master data sits elsewhere or a match has to be justified, it stops.
What if we switch later?
Then the connection switches with you. What we build hangs off the workflow, not off a vendor. That is also why no second store appears that you would have to dig yourself back out of.

Information as at: Microsoft, Microsoft 365, Outlook, SharePoint and Teams are trademarks of Microsoft Corporation. We have no business relationship with them. Information as at 15 September 2026.

Next step

Let us take one workflow
and cost it out.

45 minutes, free of charge. We look for the workflow that costs you the most time between Outlook and everything else, and record three numbers. If it does not pay off, we say so.

Request the free checkGet in touch