# Mailjet: Major incident: Lag on Event API

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2025-10-14 13:30 UTC · Detected: 2026-10-19 18:53 UTC
- [Source: https://stspg.io/xz0mkw84kdqn](https://stspg.io/xz0mkw84kdqn)
- [Company: Mailjet](https://rewindex.com/company/mailjet.md)
- Versions: before (none: first archived) → after incident\_version:744/xx8vw8hrm8rb@dc95614387ed
- Change 1 of 1 for this incident

Incident page (full timeline): [Lag on Event API](https://rewindex.com/company/mailjet/incidents/xx8vw8hrm8rb.md)
## What changed

**1. Added: Title**

```diff
+ Lag on Event API
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-10-14 13:30 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-10-15 03:42 UTC
```

**6. Added: Affected components**

```diff
+ Event API
```

**7. Added: Update** (investigating) · 2025-10-14 13:30 UTC

```diff
+ Lag are identified we are investigating the issue
```

**8. Added: Update** (identified) · 2025-10-14 14:01 UTC

```diff
+ The issue has been identified and our team is working on a fix.
```

**9. Added: Update** (identified) · 2025-10-14 15:52 UTC

```diff
+ The fix is under review.
```

**10. Added: Update** (identified) · 2025-10-14 16:33 UTC

```diff
+ The fix is now under testing.
```

**11. Added: Update** (monitoring) · 2025-10-14 18:57 UTC

```diff
+ A fix has been implemented and we are monitoring the results.
```

**12. Added: Update** (monitoring) · 2025-10-14 20:13 UTC

```diff
+ We'll be monitoring the situation throughout the night until 9am CET to ensure stable service delivery.
```

**13. Added: Update** (monitoring) · 2025-10-15 03:42 UTC

```diff
+ We are continuing to monitor for any further issues.
```

**14. Added: Update** (resolved) · 2025-10-15 03:42 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-10-14 13:30 UTC | Major incident: Lag on Event API (this change) | major |

All Mailjet changes: [timeline](https://rewindex.com/company/mailjet/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


---
Canonical: https://rewindex.com/change/ia8234e54396d44 · Markdown: https://rewindex.com/change/ia8234e54396d44.md · JSON: https://rewindex.com/api/v1/changes/ia8234e54396d44 · Generated 2026-10-20T00:01:06.440Z