# Substack in June 2021: incidents, uptime and changes

> Substack in June 2021: 4 incidents on its status page (2 major or critical), 99.58% 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/2021/06
Last updated: 2021-07-01T00:00:00Z

- Incidents posted: 4 (major/critical: 2) · Maintenance: 0
- By vendor impact label: major 2, none 2
- Uptime (vendor-reported): 99.58% free of major/critical incidents, 99.58% free of any incident; outage time 2 h 59 min, incident time 2 h 59 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [May 2021](https://rewindex.com/company/substack/2021/05.md) · Next: [July 2021](https://rewindex.com/company/substack/2021/07.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._

## Major and critical incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Substack emails failing to send](https://rewindex.com/company/substack/incidents/hs65tqd89tgg.md) | major | 2021-06-09 00:30 UTC | 2021-06-09 02:32 UTC | 2.0 h | resolved |
| [Post stats are delayed](https://rewindex.com/company/substack/incidents/tftm0zq80zfj.md) | major | 2021-06-14 14:52 UTC | 2021-06-14 15:49 UTC | 57 min | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Substack emails failing to send](https://rewindex.com/company/substack/incidents/hs65tqd89tgg.md) | major | 2021-06-09 00:30 UTC | 2021-06-09 02:32 UTC | 2.0 h | resolved |
| [Subscriber dashboards are delayed](https://rewindex.com/company/substack/incidents/fc4khq6wz379.md) | none | 2021-06-09 20:39 UTC | 2021-06-09 23:36 UTC | 3.0 h | resolved |
| [Post stats are delayed](https://rewindex.com/company/substack/incidents/tftm0zq80zfj.md) | major | 2021-06-14 14:52 UTC | 2021-06-14 15:49 UTC | 57 min | resolved |
| [Stats are out of date](https://rewindex.com/company/substack/incidents/hjbynvysw0kr.md) | none | 2021-06-30 19:33 UTC | 2021-06-30 21:04 UTC | 1.5 h | resolved |

## Cite this

Substack posted 4 status incidents in June 2021 (2 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/substack/2021/06
- Citation: Substack, “Substack in June 2021” (2021-06-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/substack/2021/06 (CC BY 4.0).
- Markdown link: `[Substack: Substack in June 2021 (2021-06-01)](https://rewindex.com/company/substack/2021/06)`


---
Canonical: https://rewindex.com/company/substack/2021/06 · Markdown: https://rewindex.com/company/substack/2021/06.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T10:18:05.247Z