# Substack in September 2021: incidents, uptime and changes

> Substack in September 2021: 6 incidents on its status page (0 major or critical), 100% free of major or critical incidents (vendor-reported). From Rewindex’s archive of Substack’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/substack/2021/09
Last updated: 2021-10-01T00:00:00Z

- Incidents posted: 6 (major/critical: 0) · Maintenance: 1
- By vendor impact label: minor 3, none 3
- Uptime (vendor-reported): 100% free of major/critical incidents, 99.57% free of any incident; outage time 0 min, incident time 3 h 2 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [August 2021](https://rewindex.com/company/substack/2021/08.md) · Next: [October 2021](https://rewindex.com/company/substack/2021/10.md) · [All months](https://rewindex.com/company/substack/reports.md) · [Substack](https://rewindex.com/company/substack.md)

_Uptime: Derived from the incidents the vendor posted on its own status page, not measured by us. A minute counts as an outage minute when a major or critical incident (as the vendor labelled it) was open; incident minutes include minor ones too. Maintenance and incidents marked "no impact" are left out, overlapping incidents are merged, a resolved incident counts for at most 7 days, and one still open with no resolution counts for at most 24 hours._

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Elevated error rate](https://rewindex.com/company/substack/incidents/9bjxdmbdrl61.md) | none | 2021-09-10 10:00 UTC | 2021-09-10 10:00 UTC | 0 min | resolved |
| [Delayed email sending for some publications](https://rewindex.com/company/substack/incidents/g4kz8x23wyn5.md) | none | 2021-09-16 19:30 UTC | 2021-09-16 19:30 UTC | 0 min | resolved |
| [Issues Displaying Publisher Statistics](https://rewindex.com/company/substack/incidents/41q3mpjthdc3.md) | minor | 2021-09-17 21:31 UTC | 2021-09-17 22:10 UTC | 39 min | resolved |
| [Elevated latency and error rate](https://rewindex.com/company/substack/incidents/gqrt38y4kwzq.md) | minor | 2021-09-22 19:20 UTC | 2021-09-22 19:20 UTC | 0 min | resolved |
| [Substack was down for 5 minutes from 15:15 PT](https://rewindex.com/company/substack/incidents/wfh1cfyntq7t.md) | none | 2021-09-23 22:23 UTC | 2021-09-23 22:23 UTC | 0 min | resolved |
| [Instagram embeds are not working in the post editor](https://rewindex.com/company/substack/incidents/qwn1r7krpq14.md) | minor | 2021-09-29 18:59 UTC | 2021-09-29 21:22 UTC | 2.4 h | resolved |

## Maintenance

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [\[Scheduled\] Scheduled database maintenance](https://rewindex.com/company/substack/incidents/3cytjwg99csw.md) | maintenance | 2021-09-29 04:02 UTC | 2021-09-29 05:20 UTC | 1.3 h | resolved |

## Cite this

Substack posted 6 status incidents in September 2021 (0 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/substack/2021/09
- Citation: Substack, “Substack in September 2021” (2021-09-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/substack/2021/09 (CC BY 4.0).
- Markdown link: `[Substack: Substack in September 2021 (2021-09-01)](https://rewindex.com/company/substack/2021/09)`


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Canonical: https://rewindex.com/company/substack/2021/09 · Markdown: https://rewindex.com/company/substack/2021/09.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T10:18:04.868Z