Litera Clean+: Server-Class Metadata Cleaning Without the Server
Summary
Litera Clean+ is a cloud-hosted, server-class metadata cleaning solution for law firms. It enforces firm-wide metadata policy centrally at the exchange layer across classic Outlook, new Outlook, Outlook for Web, and Outlook for Mac, with Litera managing all the infrastructure behind it. Built on the same deterministic, rules-based engine that 42% of the market relies on (ILTA Technology Survey, 2025), Clean+ removes more than 300 metadata types across Word, Excel, PowerPoint, PDF, and ZIP files. Written for CIOs, IT leaders, and information governance teams.
TL;DR
- Litera Clean+ enforces firm-wide metadata policy at the exchange layer, centrally and automatically, with no server to run
- It covers classic Outlook, new Outlook, Outlook for Web, and Outlook for Mac from a single configuration, removing more than 300 metadata types across Word, Excel, PowerPoint, PDF, ZIP, and embedded files
- It's certified to ISO 27001, SOC 2 Type 2, and SOC 3, and most firms are protected in weeks
In This Article
- What Is Litera Clean+?
- How Clean+ Differs from Clean
- What Metadata Does Clean+ Remove?
- Outlook Coverage, Security, and Deployment
- Why Deterministic Cleaning Beats AI-First Alternatives
- Frequently Asked Questions
Hidden metadata now leaves the firm from more places than ever. Every Outlook surface is a potential point of exposure, and per-user cleaning only works when every person does the right thing on every device, every time they send.
Firms that need something more certain reach for centralized enforcement. Historically that meant standing up a server and inheriting everything that comes with it: the hardware refreshes, the capacity planning, the security upkeep, and the IT hours. A heavy price for protection that should simply be there.
Litera Clean+ removes that burden. It's a cloud-hosted metadata cleaning solution that enforces firm policy centrally at the exchange layer, across every Outlook version and device, with no server for your team to run.
What Is Litera Clean+?
Clean+ is part of Litera's connected legal technology platform, built to protect documents at every stage of the matter lifecycle. It's a cloud-hosted, server-class metadata cleaning solution for law firms that routes outbound attachments through Litera-managed infrastructure and applies firm policy centrally at the exchange layer, removing metadata consistently across every Outlook version and device.
Underneath is the same deterministic, rules-based engine that 42% of the market relies on, according to the 2025 ILTA Technology Survey. Because Clean+ runs on Office Add-ins, one configuration extends coverage across every Outlook a firm uses. Policy is applied at the center, automatically, before anyone hits send.
How Clean+ Differs from Clean
Litera Clean protects outbound documents at the user level across every Outlook environment and device. It's the right first line of defense for per-user protection.
Clean+ builds on Clean with server-class enforcement applied centrally to every outbound attachment. The distinction is where policy is applied:
| Capability | Clean | Clean+ |
|---|---|---|
| Protection scope | Per-user | Firm-wide, centralized |
| Enforcement layer | Desktop/add-in | Exchange layer + desktop |
| Infrastructure required | None | None |
| Who manages hosting | N/A | Litera |
Firms that need policy enforced automatically across the whole firm choose Clean+. Those who want strong per-user protection at the desktop level start with Clean. For teams evaluating clause comparison tools and metadata cleaning together, Clean+ handles both in a single send process.
What Metadata Does Clean+ Remove?
Clean+ removes more than 300 metadata types from outbound attachments, including tracked changes, comments, author and organization details, revision history, hidden text, and embedded content. It processes Microsoft Word, Excel, PowerPoint, PDF, ZIP, and embedded files, with each attachment completing in sub-second time.
The engine is deterministic and rules-based, applying your firm's policy the same way on every document. Probabilistic AI tools can't make that guarantee. When privilege is on the line, a deterministic engine is the only defensible choice.
Outlook Coverage, Security, and Deployment
Outlook coverage. Clean+ covers classic Outlook, new Outlook, Outlook for Web, and Outlook for Mac from a single configuration, with mobile email processing on the near-term roadmap. Protection stays consistent as the firm's email environment evolves.
Security and compliance. Clean+ is certified to ISO 27001, SOC 2 Type 2, and SOC 3, and aligned to GDPR, NIS 2, and DORA. Every clean event is logged for governance and compliance, giving IT centralized control and a defensible audit trail. Litera built Clean+ for legal work from day one.
Deployment. Because Litera manages all the infrastructure through Office Add-ins, there's no hardware to configure and most firms are protected in weeks. CIOs and IT leaders at scaling law firms get firm-wide metadata enforcement consolidated in one place, with Litera handling everything behind it.
Why Deterministic Cleaning Beats AI-First Alternatives
There's no such thing as a partial win in metadata cleaning. A missed scrub can waive privilege or cost the firm a client relationship, and it usually isn't discovered until after the fact. A metadata breach creates compliance exposure and gives clients a reason to question whether the firm can be trusted with their most sensitive work.
The appeal of AI-first metadata tools is understandable, but probabilistic models weren't built for zero-tolerance workflows. They perform well on average, which isn't the same as performing correctly every time. Metadata cleaning requires a deterministic engine precisely because there's no acceptable error rate.
Clean+ is backed by Litera's 30 years of legal expertise and more than a decade of category leadership in metadata cleaning. The engine protecting your firm's most sensitive documents has been refined through more legal workflows than most of today's AI-first competitors have ever seen.
See how Clean+ protects every document before it leaves your firm.
Frequently Asked Questions
What is Litera Clean+?
Litera Clean+ is a cloud-hosted, server-class metadata cleaning solution for law firms. It enforces firm metadata policy centrally at the exchange layer across every Outlook version and device, with no server for your team to set up or manage.
What's the difference between Clean and Clean+?
Litera Clean protects outbound documents at the user level, embedded where each lawyer works. Clean+ builds on that with centralized, server-class enforcement applied automatically to every outbound attachment at the exchange layer. Clean is per-user protection; Clean+ is firm-wide policy.
Does Clean+ require a server or on-premises infrastructure?
No. Litera manages all the infrastructure, so your firm gets server-class enforcement without managing any hardware. That includes updates, capacity planning, and everything else that comes with running a server.
Which Outlook versions does Clean+ support?
Clean+ supports classic Outlook, new Outlook, Outlook for Web, and Outlook for Mac from a single configuration. Mobile email processing is on the near-term roadmap, so coverage will extend there too.
What security certifications does Clean+ hold?
Clean+ is certified to ISO 27001, SOC 2 Type 2, and SOC 3, and aligned to GDPR, NIS 2, and DORA. Every clean event is logged, so your IT team has a defensible audit trail and complete governance visibility.
How long does Clean+ take to deploy?
Clean+ deploys in weeks for most firms. Litera manages all the infrastructure through Office Add-ins, so there's no hardware to configure and nothing to maintain afterward.
Does Clean+ use AI to clean metadata?
No. The engine underneath Clean+ is deterministic and rules-based, applying firm policy the same way on every document. Probabilistic AI tools perform well on average, but metadata cleaning requires accuracy on every document without exception.
