# Substack: Major incident: Posts not being delivered via email

**Summary:** Substack reported a major email delivery incident affecting some posts, starting 2024-10-01 14:04 UTC and resolved at 2024-10-01 15:06 UTC, lasting 1 h 1 min. At 14:32 UTC, Substack said delivery delays were resolved and previously scheduled posts were being delivered. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2024-10-01 14:04 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/cnllzzg4g4d1](https://stspg.io/cnllzzg4g4d1)
- [Company: Substack](https://rewindex.com/company/substack.md)
- Versions: before (none: first archived) → after incident\_version:261/r8s5rplw6sv9@0b30bc430c2d
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Posts not being delivered via email
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2024-10-01 14:04 UTC
```

**5. Added: Resolved time**

```diff
+ 2024-10-01 15:06 UTC
```

**6. Added: Affected components**

```diff
+ Email delivery
```

**7. Added: Update** (investigating) · 2024-10-01 14:04 UTC

```diff
+ We are investigating reports that some posts are not being delivered via email.
```

**8. Added: Update** (identified) · 2024-10-01 14:08 UTC

```diff
+ We can confirm delays in email deliveries for Substack posts starting at 9am EDT. We are working to resolve the issues.
```

**9. Added: Update** (identified) · 2024-10-01 14:24 UTC

```diff
+ We are continuing to work on addressing delays in email deliveries.
```

**10. Added: Update** (monitoring) · 2024-10-01 14:32 UTC

```diff
+ The delays in post delivery have been resolved and previously scheduled posts are currently being delivered. We are monitoring our systems to ensure delivery.
```

**11. Added: Update** (resolved) · 2024-10-01 15:06 UTC

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

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2024-10-01 14:04 UTC | Major incident: Posts not being delivered via email (this change) | degradation |

All Substack changes: [timeline](https://rewindex.com/company/substack/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/i87ad1893dcd2e3 · Markdown: https://rewindex.com/change/i87ad1893dcd2e3.md · JSON: https://rewindex.com/api/v1/changes/i87ad1893dcd2e3 · Generated 2026-10-18T03:21:52.891Z