Downrightnow
// Incident Post-MortemDRN-D49039F2

ProtonMail outage on June 24, 2026

Major severityResolved3h 1mEmail
Started · UTC
Jun 24, 09:41 PM
4h ago
Resolved · UTC
Jun 25, 12:43 AM
44m ago
Duration
3h 1m
End-to-end
Peak confidence
80.00
155 snapshots
// User impact

ProtonMail users likely saw failed connections, degraded availability, or session instability for this Email service. The incident reached Major severity and lasted 3h 1m. The stored report window does not show a preserved user-report spike.

// What happened

Jun 24, 23:41 CEST Identified - One of our providers is currently experiencing a partial outage, affecting some of our CH server fleet. The service remains otherwise operational, and we are working on a solution.

Deterministic readout · awaiting AI summary pass

// Timeline

  1. Incident detected

    Major confidence crossed the incident threshold for ProtonMail: partial outage affecting CH servers only.

  2. Status changed to Degraded Performance

    The stored readout moved to Degraded Performance with confidence 38.00.

  3. Status changed to Operational

    The stored readout moved to Operational with confidence 55.00.

  4. Status changed to Degraded Performance

    The stored readout moved to Degraded Performance with confidence 34.00.

  5. Marked resolved

    The incident was closed after 2h 10m of observed impact.

  6. Peak confidence reached

    Confidence peaked at 80.00 while the service was marked Operational.

// Signals by source0 sources

No per-source signal payloads were preserved in this incident's snapshot window.

// Aggregate evidence

Confidence scoring

80.00

The incident reached 80.00 peak confidence across 155 stored status snapshots.

User reports

0 / 15m

No elevated user-report volume was preserved in the incident window snapshots.

Status samples

0 affected

The incident row exists, but the bounded snapshot window does not include affected status samples.

Recovery signal

Resolved

Recovery was recorded at Thu, Jun 25, 2026, 12:43 AM UTC.