# Mailjet: Major incident: 503 errors in the API

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2023-06-24 09:06 UTC · Detected: 2026-10-19 18:53 UTC
- [Source: https://stspg.io/mq3m9kxpxkyt](https://stspg.io/mq3m9kxpxkyt)
- [Company: Mailjet](https://rewindex.com/company/mailjet.md)
- Versions: before (none: first archived) → after incident\_version:744/m81h94f2s2wc@6094a6328129
- Change 1 of 1 for this incident

Incident page (full timeline): [503 errors in the API](https://rewindex.com/company/mailjet/incidents/m81h94f2s2wc.md)
## What changed

**1. Added: Title**

```diff
+ 503 errors in the API
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2023-06-24 09:06 UTC
```

**5. Added: Resolved time**

```diff
+ 2023-06-24 12:12 UTC
```

**6. Added: Affected components**

```diff
+ Event API, REST API, SEND API
```

**7. Added: Update** (investigating) · 2023-06-24 09:06 UTC

```diff
+ Some customers might be experiencing 503 errors coming from our APIs, our team is investigating the issue.
```

**8. Added: Update** (identified) · 2023-06-24 09:56 UTC

```diff
+ The issue has been identified and a fix is being implemented.
```

**9. Added: Update** (monitoring) · 2023-06-24 10:21 UTC

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

**10. Added: Update** (resolved) · 2023-06-24 12:12 UTC

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

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2023-06-24 09:06 UTC | Major incident: 503 errors in the 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._


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Canonical: https://rewindex.com/change/i1fb4d662341bec · Markdown: https://rewindex.com/change/i1fb4d662341bec.md · JSON: https://rewindex.com/api/v1/changes/i1fb4d662341bec · Generated 2026-10-20T00:48:42.891Z