Work in folders
Workspaces, versions, search, comments, tasks, a calendar that knows when a share or signature is due, and Office files you can edit in the browser.
Daily work →Secure content management for regulated organisations
Your team can edit a file, send the approved version, collect documents back and request signatures from the same workspace. Recipient access, retention and audit stay attached to the work, ready when somebody needs a clear answer.

UK company Casewelt is built and run by Sial Networks Limited
Your own sign-in Single sign-on through your identity provider, on Business and above
API & signed webhooks Documented automation, on Business and above
Cookie policy Necessary cookies where needed: explained, not hidden
Explore Casewelt
Follow a working example, understand the platform, or go straight to the API.
Follow one file through share, policy, signature and audit: in the order a working week usually goes.
Product walkthrough →How storage, sharing, retention and evidence sit next to the folders your team already understands.
Platform overview →Authentication, upload, shares, signatures and events: the same work as the console, over HTTP.
API reference →Product
One workspace for staff, a focused page for recipients and a separate console for organisation controls.
Workspaces, versions, search, comments, tasks, a calendar that knows when a share or signature is due, and Office files you can edit in the browser.
Daily work →Choose up to 50 files, set one expiry and send one mailbox-verified link. Recipients can download individual items or an optional ZIP.
Sharing & file requests →A supplier uploads into the right folder and sees nothing else. The request expires. Quota still applies.
Inbound requests →The envelope is the same file. Standard electronic signatures, and EU Qualified where the plan includes them. The signed copy files as a new version.
Signatures →Allow ordinary work, refuse an unsafe share, enforce retention and block deletion while a legal hold is active.
Governance →Search the product record. Open an investigation. Export a sealed evidence package when a screen is not enough.
Audit →People, groups, roles, your sign-in, your hostname, your look, your storage or ours, mail, quotas, devices, billing.
Administration →Personal gives one person a private workspace, file versions, controlled shares, signatures and activity history.
Personal →Assistance uses the same permission as download. Credits are visible. A blank document is still just a file.
Assistance →API users with scopes, signed events, no storage URLs. A separate credential if you sell Casewelt to your own customers.
API reference →The portal
Favourites, recent files and storage sit in the same sidebar as the work. The interface can carry your organisation’s branding. Bytes always leave through Casewelt. Nobody is handed a storage link they could forward.


Person, file, version and outcome: answered from the system that made the decision.

Revoke takes effect in the product. Previously permitted work stops; the event stays in the record.
From file to evidence
A file becomes a versioned record as soon as it enters the workspace. Sharing, retention and audit then refer to that same record.
Create, edit and comment in a governed folder.
Send the approved version to verified recipients.
Apply classification, retention and legal hold.
Search the record and export evidence when needed.
External collaboration
A Casewelt share is made out to a named person, points at the version you approved, expires on a date you set, and can be pulled back without touching anyone’s staff access. Recipients open it on a separate page. They never get an account, and they never see the rest of your workspace.
How secure sharing worksPolicy
A blocked share, a delete under hold, a revoked session, a placement conflict: each is a named outcome. The person stays signed in. The audit line says why it stopped.
This file is not allowed to leave the organisation, and the refusal is recorded as policy, not as a login error.
Someone tried to remove a file under hold. The delete stops; the attempt stays visible.
You ended that person’s session. The next request fails immediately. They stay signed out of Casewelt until they sign in again.
The write would put content in the wrong region. Casewelt stops it rather than letting it drift.
Governance
Three different questions, three separate answers, all attached to the same file. Can this person do this right now? How long does this have to be kept? And is there a reason it must not be deleted today?
Lifecycle controlsWho opened this file?External recipient · v3 · ALLOW
Which policy allowed it?create-share evaluated
When was access revoked?Share ended · later open DENIED
Audit & evidence
Search by person, file, version and what was decided. The answer comes from the system that made the decision, so nobody has to reconstruct it from inboxes and server logs a month later.
Explore auditabilityIntegrations
Use your identity provider over OIDC, call the HTTP API and verify signed webhooks. Plan availability is listed on the pricing page.
Use cases
Get the board pack to two external auditors for a fortnight, without giving them a way into anything else.
Freeze a contract the moment a dispute starts, send the same file for signature, and show later that nothing was removed while the hold was on.
Work alone on Personal, or as a team on an organisation host with SSO, roles and an API. See the scenarios →
Security architecture
Your organisation’s data is kept separate from every other customer’s. Each file version is encrypted with its own key. Sessions can be ended on the spot. Automation uses its own credentials. The audit record is appended, never rewritten.
Desktop & mail
Casewelt Desktop keeps an approved computer matched with the portal Agents tree. Crypt seals sensitive files on device. Thunderbird and Outlook add-ins insert Secure Share and File Request into the mail you send. Installers are not on this website: sign in to your portal, then open Download.
Desktop & mail clientsNext step
Bring a real document and the controls around it. We will walk through access, sharing, retention and audit from start to finish.