Machine translation, not reviewed by a native speaker. In case of doubt, the French text prevails.

SANTVIA · Sovereign communication

Your email, sovereign by nature.

Sekervia is a complete European mail client — a match for Thunderbird and Outlook — designed as a platform of trusted add-ons. Graph, IMAP/JMAP and MSSanté, PGP/S-MIME encrypted, zero telemetry, hosted in the EU.

Self-hostable on your own servers Graph · IMAP/JMAP · EWS MSSanté: Mailiz · MonSisra · Lifen PGP & S/MIME
Sekervia — unified inbox
Accounts Inbox MSSanté Sent Archive
Analysis laboratory
Report — Mr Durand
MSSanté · encrypted
Practice secretariat
Weekly schedule
IMAP · standard
Colleague — Dr Martin
Specialist opinion (signed)
S/MIME · signed
The problem

Your work email is about to crack

Microsoft is gradually shutting down Exchange Web Services (EWS) from October 2026, with a full stop in April 2027. Connectors, backups and clients wired to EWS will stop working. Meanwhile consumer email stays hosted outside Europe, funded by scanning your mail, and locks users in — while regulated sectors (healthcare, public) have almost nothing built for them.

The EWS cut-off

October 2026 → April 2027: legacy Exchange integrations fall. Microsoft Graph parity is still incomplete, and sovereign Graph only lands late 2026.

Non-EU dependency

Hosted outside Europe, content scanned for ads, data locked in: work email is rarely sovereign, rarely end-to-end encrypted.

The regulated-sector gap

Practices, hospitals and public bodies need MSSanté, S/MIME and compliant hosting — existing open clients equip them poorly.

What Sekervia does

A complete mail client, sovereign, ready for healthcare and every critical profession

Sekervia takes everything you expect from a great mail client and builds it on sovereign foundations: open protocols, encryption, zero telemetry, and a controlled add-on platform.

A real client, at parity

Conversations and threading, HTML (sandboxed) and plain reading pane, rich composer (reply, forward, signatures, drafts, outbox with retry), folder tree, multi-account unified inbox, offline. Nothing to envy Thunderbird or Outlook.

Configurable security

Local encryption at rest, strict TLS, PGP and S/MIME, remote content blocked by default, content-free logs. Secure-by-default, hardenable to the extreme for sensitive data.

Safe add-on platform

Isolated extensions in a capability-based sandbox (zero permission by default, calls via a guarded API). In-house add-ons: Kondensa (digest), Vigilvia (anti-scam), Doclara (documents). Third parties only after security review and signing.

Ready for healthcare and critical professions

MSSanté compatibility (Mailiz, MonSisra, Lifen) and INS linking for practitioners. For lawyers, notaries, experts and every profession bound by confidentiality: PGP and S/MIME, local encryption at rest, logs without content. Onboarding that creates or connects any mailbox, standard or professional, on the spot.

Features

A whole mail client, no compromise

The full list of what Sekervia does — best-in-class, with sovereignty on top.

Reading & threading

Conversations, sandboxed HTML and plain-text pane, attachments, local and server search (IMAP SEARCH).

Rich composer

Reply, reply-all, forward, signatures, drafts, outbox with automatic retry.

Open protocols

IMAP (IDLE) & SMTP, JMAP, Microsoft Graph, EWS. Real-time sync, no lock-in.

Multi-account

Unified inbox, multiple accounts, folder tree, CardDAV address book.

Encryption

PGP and S/MIME, local encryption at rest, strict TLS, remote content blocked by default.

MSSanté

Mailiz, MonSisra, Lifen, INS linking. Onboarding creates and connects the mailbox on the spot.

Rules & filters

Thunderbird-style rules and filters, automatic sorting, trusted senders.

Controlled add-ons

Kondensa, Vigilvia, Doclara. Capability-based sandbox, third parties signed after security review.

Everywhere, multilingual

Windows/macOS/Linux desktop and derived mobile apps. Interface for the EU's 24 official languages.

Healthcare & MSSanté

Secure health messaging, without friction

Sekervia is built for practitioners: adding an MSSanté or standard mailbox takes minutes, in-app, with no pre-provisioned account.

Note (honesty). Health data falls under HDS hosting (decree 2026-209, scope extended to secure messaging). Sekervia is architected for that hosting; certification is in progress and is not presented as obtained.
Verifiable sovereignty

Checkable facts, not slogans

What you can verify today, and what we commit to.

See the SANTVIA proof sheet →

Who it's for

Three audiences, one requirement

Medical practice

The colleague who writes fast and safe

MSSanté and standard mailbox together, reports condensed per patient, S/MIME-signed exchanges. Health messaging without fighting the tool.

Public body

The sovereign public service

An open client, hosted in the EU, no telemetry or lock-in, replacing the Exchange connectors threatened by the EWS cut-off.

Regulated SME

The company that must prove it

Configurable encryption, controlled add-ons, open protocols: email that stands up to compliance demands, with no non-EU dependency.

Ready to take back control of your email?

Sekervia is in early access. Write to us for a demo or a pilot rollout — practices, public bodies, regulated SMEs first.

FAQ

Frequently asked questions

What is Sekervia?

Sekervia is a sovereign European mail client, complete like Thunderbird or Outlook, designed as a platform of trusted add-ons. It is encrypted, telemetry-free and hosted in the European Union.

Is Sekervia MSSanté-compatible?

Yes. Onboarding supports the MSSanté operators Mailiz (ANS), MonSisra (GCS SARA) and Lifen, plus standard IMAP/SMTP, Microsoft Graph and EWS, with INS linking.

What does the Microsoft EWS cut-off change?

Microsoft is gradually blocking Exchange Web Services from October 2026, with a full stop in April 2027. Sekervia is natively Graph and IMAP/JMAP: it keeps working when EWS connectors stop.

Are my messages read or exploited?

No. Sekervia has no telemetry, funds nothing by scanning your mail and trains no AI on your messages. Content is encrypted at rest and logs are content-free.

Am I locked into the ecosystem?

No. Sekervia speaks IMAP/SMTP, JMAP and Graph. No lock-in, guaranteed export: you stay free to leave with your data.

Which devices does it run on?

Windows, macOS and Linux desktop, with derived iOS and Android mobile apps from the same portable core.

How can I try it?

Sekervia is in early access. Write to contact@santvia.eu for a demo or a pilot rollout.

SANTVIA, the sovereign galaxy

Sekervia is one brick of SANTVIA: digital communication, protection and compliance, hosted in Europe. One account, one sovereign copilot, proof rather than promises.

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