QC stands for Quality Control. That’s the basic idea behind them: we want to alert you to things in your data that might’ve traditionally gone unnoticed and that may or may not be important to your matter.

The QC Tag tells you things like:

How many potentially privileged emails were detected?
How many documents were from a database upload?
How many documents have a duplicate?
...and more.

What if a person was sending privileged emails with PDF attachments to a law firm that the attachments themselves contained non-searchable attachments, like photos or scanned documents? And what if those non-searchable attachments were critical documents to your case?

With Logikcull, you’d be able to answer that question. This is just one example out of thousands where you’d want to leverage QC Tags to know more about your data. 

If you're curious what each QC Tag means, simply hover over the name in the filter and the tooltip box will tell you.

QC Tag


Embedded Document

Documents that are not email attachments, but have come from within another document. For instance, a .PPT within a .DOC is an embedded document.

Failed Extraction

Contents of container could not be fully extracted.

From Box

Documents that have been imported from Box.

From Import

Documents imported from a database (i.e. production, load file, etc.)

From Slack

Documents that are part of a Slack archive.


Emails that have BCC (Blind Carbon Copy) metadata in them.

Has Duplicate

Documents that are duplicates of other documents.

Has Embedded Files

Documents that are not email, but have embedded files in them as attachments. For instance, a .DOC that contains an embedded .PPT file.

Has Hidden Comments

Documents that have MS Excel hidden comments in them.

Has Hidden Worksheets

Documents that have MS Excel hidden worksheets in them.

Has MS Office Macros

Documents that have MS Office embedded macros in them.

Has No Native

Imported documents that have no Native File.

Has No Text

Documents with no extracted or OCRed text whatsoever.

Has Revision

Documents that have MS Word revisions in them.

Has Speaker Notes

Documents that MS PowerPoint speaker notes in them.

Has Threads

Documents that are part of an email thread.

Has Virus

Documents that have been detected to contain a virus. These documents are quarantined during processing and can not be downloaded.

Inclusive Email

An email that contains unique content not included in any other email in a thread.

Is a Copy

This document is a copy of a document from another project.

Is Overlaid

Overlay(s) applied to document.

Last Email

Email that is the last message of an email thread or is a message without a thread. When part of a thread, this this tag indicates the end of a particular thread and not the inclusiveness of the thread's contents within this email.

Mismatched Extension

Documents with incorrect or missing file extensions. For instance, .DOC file that is really a .PPT file but with an incorrect extension.

Nist File

Documents identified as being part of the NSRL database of known computer files.


Use this QC tag to find documents that contain zero QC Tags.

Not Rendered

Documents that were not rendered to PDF during processing.

OCR Failed

Document where OCR (Optical Character Recognition) was attempted but failed.


Documents that were OCRed (Optical Character Recognition) so they can be searched.

Potentially Privileged

Emails that have a law firm email address in the From, To, CC, or BCC fields. They are considered to be potentially privileged.


Documents that are password protected.

Rendered Text

The document's text was used to render the document to PDF. This happens if all other means to render the document fail.

Transfer Failed

The transfer of this file from Box failed or was corrupted.

Truncated Email Metadata

Documents whose To, CC, or BCC fields exceed system capacity for indexing.

Truncated Text

Documents whose text length exceeds system capacity for indexing.

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