Elchi Studios, Oberägeri, Switzerland

We replace slow processes.

With software we build ourselves and run in Switzerland and the EU.

The constellation over our serversSix stars, five in the constellation Andromeda and one in Lacerta. Each is the catalogue star nearest the zenith over a server city at midnight on 3 October 2026, Swiss time, 0.2 to 1.0 degrees away: Amsterdam, Falkenstein, Nuremberg, Frankfurt, Paris and Geneva. The lines follow the links in the cluster. To the left the Andromeda galaxy M31, below it the star 51 Pegasi, around which the first planet of a sun-like star was found at the Geneva Observatory in 1995.
Midnight, 3 October 2026, Swiss time. Five stars in Andromeda, Paris in Lacerta, each 0.2 to 1.0 degrees from the zenith of its city. Point at a star to see its servers. Stereographic projection, east to the left. Stars to magnitude 6.5 from the Bright Star Catalogue (Hoffleit and Warren, CDS V/50).

Products

What runs today

Two products we build and run ourselves. More follow when they are finished, not before.

EAuth

Sign-in for your applications, to OAuth 2.1 and OpenID Connect, with passkeys and SAML.

  • Free, with no user limit and no paid tier
  • Passkeys and a second factor included
  • An export with the password hashes, if you leave

EMXBeta

Business email on your own domain, in the browser and in every mail app.

  • CHF 4 per mailbox and month
  • Messages stored encrypted in Geneva
  • One API, the one the web client uses

Offers

What else we build

Besides the products we take on single pieces of work: company websites at a fixed price and bounded technical mandates.

Websites

Company websites at a fixed price, built to be found, and run on the same servers.

  • CHF 6,000 once, then 300 a month
  • A first draft in two weeks
  • All content can be exported at any time

Engineering mandates

Bounded technical mandates for systems that are too slow, too costly or too fragile.

  • Measure first, then build, with a report
  • A fixed-price audit in five days
  • Goal, period and price on one page

Infrastructure

The sky above our servers

Over every city where one of our servers stands, we looked for the bright star nearest the zenith at midnight on 3 October 2026, the night the cluster went live. Joined like the servers are joined, those stars are our mark.

How the cluster is built
servers
8
server providers
5
countries with servers
4
copies of every database
3

Cluster inventory, as of 8 October 2026. Not counting the DNS services Cloudflare and ClouDNS, which only resolve names.

Trust

Where your data is

Accounts, mailboxes and content sit on our servers in Switzerland, Germany, the Netherlands and France, at European providers. For two tasks we still use services of US groups, and we name them: Resend for notification mails such as an address confirmation, and Stripe for EMX payments. Cloudflare only holds our DNS zones.

The path of an email at EMXAn email comes from a sender on the internet to mx.emxmail.ch, where SPF, DKIM and DMARC are checked and the spam filter runs. Messages and attachments are stored encrypted in Geneva, sealed if you want; the database is in Frankfurt, with copies in Nuremberg and Paris. Mail is read in the web client and the app with sign-in through EAuth, in Outlook, Apple Mail and on the phone over IMAP with an app password, and by your software through the API with a token. Our own servers deliver outgoing mail, signed with DKIM, to recipients on the internet.StoredGenevamessages and attachments,stored encryptedsealed, if you wantFrankfurtdatabaseNurembergcopyPariscopyReceivedSenderanywhere on the internetmx.emxmail.chchecks SPF, DKIM, DMARCspam filterReadWeb client and appsign-in with EAuthOutlook, Apple Mail, phoneIMAP, app passwordYour softwareAPI with a tokenSentOur servers deliversigned with DKIMRecipientanywhere on the internet The path of an email at EMXAn email comes from a sender on the internet to mx.emxmail.ch, where SPF, DKIM and DMARC are checked and the spam filter runs. Messages and attachments are stored encrypted in Geneva, sealed if you want; the database is in Frankfurt, with copies in Nuremberg and Paris. Mail is read in the web client and the app with sign-in through EAuth, in Outlook, Apple Mail and on the phone over IMAP with an app password, and by your software through the API with a token. Our own servers deliver outgoing mail, signed with DKIM, to recipients on the internet.StoredGenevamessages and attachments,stored encryptedsealed, if you wantFrankfurtdatabaseNurembergcopyPariscopyReceivedSenderanywhere on the internetmx.emxmail.chchecks SPF, DKIM, DMARCspam filterReadWeb client and appsign-in with EAuthOutlook, Apple Mail, phoneIMAP, app passwordYour softwareAPI with a tokenSentOur servers deliversigned with DKIMRecipientanywhere on the internet
The path of an email at EMX
Everything on data location and security

You talk to the person who builds it.

No sales department in between. Your enquiry is answered by the people who build your project.

+41 58 513 63 11 contact@elchi.dev