# Mailjet: Major incident: Template builder reports into 500 error page

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2022-09-12 14:48 UTC · Detected: 2026-10-19 18:53 UTC
- [Source: https://stspg.io/fn6rcqhnqlg5](https://stspg.io/fn6rcqhnqlg5)
- [Company: Mailjet](https://rewindex.com/company/mailjet.md)
- Versions: before (none: first archived) → after incident\_version:744/zrmssytsrqzj@47f0794b12e1
- Change 1 of 1 for this incident

Incident page (full timeline): [Template builder reports into 500 error page](https://rewindex.com/company/mailjet/incidents/zrmssytsrqzj.md)
## What changed

**1. Added: Title**

```diff
+ Template builder reports into 500 error page
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2022-09-12 14:48 UTC
```

**5. Added: Resolved time**

```diff
+ 2022-09-12 20:11 UTC
```

**6. Added: Affected components**

```diff
+ Mailjet Embedded
```

**7. Added: Update** (investigating) · 2022-09-12 14:48 UTC

```diff
+ We are currently investigating the issue
```

**8. Added: Update** (identified) · 2022-09-12 14:54 UTC

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

**9. Added: Update** (monitoring) · 2022-09-12 19:41 UTC

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

**10. Added: Update** (resolved) · 2022-09-12 20:11 UTC

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

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2022-09-12 14:48 UTC | Major incident: Template builder reports into 500 error page (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/id384fb35b60cc5 · Markdown: https://rewindex.com/change/id384fb35b60cc5.md · JSON: https://rewindex.com/api/v1/changes/id384fb35b60cc5 · Generated 2026-10-20T00:48:29.393Z