The cross-firm trust layer

Talk to opposing counsel somewhere better than email.

Verified-attorney identity, end-to-end encryption, and a tamper-evident record that holds up in court. MatterChat replaces the insecure email chain between firms with rooms both sides can trust.

Bar-verified
every attorney identity
Firm-held keys
encryption you control
Rule 4.2
consent on the record
Henderson v. Pacific Insurance · Cross-firm room
Cross-firm · Opposing counsel
DR Daniel Reyes Reyes & Cole LLP Verified · CA Bar
Daniel Reyes · Reyes & Cole LLP
Counsel — attached is our client's response to your Request for Production. We're available to meet and confer Thursday.
Morgan Ellis · Ellis & Park LLP (you)
Received, thank you. Thursday at 2:00 PT works — I'll send the room invite and the exhibit index.
🔒 Encrypted end-to-end · Rule 4.2 consent recorded
01 The problem

Cross-firm work still runs on email. It shouldn't.

The most sensitive conversations a firm has — meet-and-confers, settlement posture, document exchange — happen in the one channel with the weakest guarantees. Email was never built for privileged, adversarial communication between two law firms.

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02 How the trust layer works

Six guarantees, built into every cross-firm room

Identity, consent, encryption, retention, audit, and isolation — each one enforced by the platform, not left to the honor system.

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03 For your security lead

Why it's safe — down to the key

MatterChat is built so that no other firm — and not MatterChat — can read your side of a cross-firm conversation. The architecture is designed to be reviewed, not just described.

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Per-room key wrapping
Ellis & Park LLP
🔑 Firm escrow key
Held by your firm · never leaves your control
Reyes & Cole LLP
🔑 Firm escrow key
Held by their firm · isolated tenant
Room key · Henderson v. Pacific Wrapped under both firms 🔒
Message content is encrypted with a per-room key. That key is wrapped separately under each firm's escrow key — so access is granted, and revoked, firm by firm.
04 Where this stands today
In controlled rollout

Being brought to production — carefully.

Cross-firm messaging is the trust layer, so we're holding it to a higher bar. It is being moved to production under independent legal-ethics and security review, and is available today to a limited set of firms in a controlled rollout. Secure team chat and Omnis Boards inside your own firm are available now. If cross-firm is on your roadmap, request access and we'll bring you in as capacity and review milestones allow.

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Give your firm a better place to talk across the table.

Start with secure chat and Omnis Boards inside your firm today, and request access to cross-firm rooms as we bring them to production.