Blackline.AIStart

Redact emails and threads

Printed or exported email threads often need to go to lawyers, HR or authorities — but not every address and name should travel with them. Blackline AI finds senders, recipients and phone numbers and blacks them out permanently.

Open the editor Pricing

See how it works

Tick a category — the AI finds every match in the document and blacks it out. Names, amounts, IBANs, addresses and more, in seconds.

contract.pdf

Service Agreement

Between Sarah Bennett, 14 Kingsway, London WC2B 6LH and Northwind Ltd.

Consulting fee 4.250,00 EUR · Setup 890,00 EUR

Payable to IBAN DE44 5001 0517 5407 3249 31

Signed by Mark Feldmann · Total 5.140,00 EUR

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  • Just click what should be redacted — no manual boxes needed.
  • AI reads the whole document, including scans and photos (OCR).
  • Export is flattened: no hidden text, nothing recoverable.

What gets redacted

  • Email addresses of senders and recipients
  • Names in salutations and signatures
  • Phone and mobile numbers
  • Postal addresses in signatures
  • CC/BCC lists and distribution groups

How it works

  1. 1Drop your file into the editor – PDF, JPG or PNG.
  2. 2The AI scans every page and classifies sensitive items into categories.
  3. 3Toggle categories on/off, fine-tune or draw your own boxes.
  4. 4Export a flat, non-recoverable PDF in one click.
Permanent redaction

Black bars are baked into a flattened image – the text underneath cannot be copied, searched or recovered.

Runs in your browser

OCR, rendering and export happen on your device. Only extracted text is sent to AI for classification.

GDPR-friendly by design

Files are never stored on our servers. Close the tab and the document is gone.

Multi-page & scans

Works with multi-page PDFs and scanned images thanks to built-in OCR.

FAQ

How do I get an email thread into the tool?+

Print or export the thread as PDF from your mail client (or screenshot it as JPG/PNG) and drop it into the editor.

Does it detect addresses in quoted replies?+

Yes. The AI scans the whole document, including nested quotes and signatures.

Can I keep one participant visible and hide the rest?+

Yes. Delete individual redaction boxes or add manual ones — full control before export.

Start redacting now

Free for 3 documents per month. No signup needed to try.

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