---
title: "eDiscovery & Internal Research"
url: https://lookeen.com/use-cases/ediscovery-research
lang: en
description: "Internal investigations, data subject requests and audits: find, review and mark emails and documents with precise search syntax, filters, tags and comments."
published: 2026-10-12T10:00:00+00:00
modified: 2026-10-12T10:00:00+00:00
---

# eDiscovery & Internal Research

An internal investigation, a data subject request, an audit: suddenly every email and document about a topic, a person or a time period has to be found and reviewed. Lookeen makes it systematic – across mailboxes, archives and file shares.

[Try it free](https://lookeen.com/get-started) [Talk to us](https://lookeen.com/contact)

## Typical occasions

In these cases you need to find everything, quickly and completely.

### Internal investigations

Collect all communication about a matter, a contract or a project.

### Data subject requests

Find where data about a person is stored – for a GDPR access request, for example.

### Audits and disputes

Locate documents for an audit, review or legal dispute quickly and completely.

## Tools for research

These features help you search large collections thoroughly and record your findings.

### Precise search syntax

Exact phrases, AND/OR/NOT, wildcards, fuzzy search, proximity (`"contract termination"~5`), document properties and date ranges.

### Discovery filters

Break results down and narrow them by type, file type, size, date, attachment, sender, recipient, path and tags.

### Review in the preview

Read documents and emails in the preview with hits highlighted and jump from hit to hit. Duplicate emails are grouped.

### Mark and comment

Add color tags and comments to relevant hits and recall them later with `tag:`.

### Scans included

With OCR, scanned documents and image PDFs become part of the research too.

### Summarize with AI

Optionally, Lookeen AI summarizes long documents and email threads – with local models if you prefer.

## Good to know

What Lookeen does in internal investigations and where its limits are.

-   **Access by permission:** With Lookeen Server, everyone only sees what they're authorized for. For investigations, administrators can grant targeted delegations.
-   **Every source at once:** Mailboxes, online and PST archives, file servers and Microsoft 365 in one search.
-   **A complement, not a replacement:** Lookeen is a tool for finding and reviewing. Keep using your archiving and compliance systems for retention and legal hold.

Learn more: [PST archives](https://lookeen.com/use-cases/pst-archives) · [Law firms](https://lookeen.com/industries/law-firms) · [AI with local models](https://lookeen.com/use-cases/local-ai)

[All use cases →](https://lookeen.com/use-cases)