# Substack in April 2021: incidents, uptime and changes

> Substack in April 2021: 2 incidents on its status page (1 major or critical), 99.60% 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/2021/04
Last updated: 2021-05-01T00:00:00Z

- Incidents posted: 2 (major/critical: 1) · Maintenance: 0
- By vendor impact label: major 1, none 1
- Uptime (vendor-reported): 99.60% free of major/critical incidents, 99.60% free of any incident; outage time 2 h 50 min, incident time 2 h 50 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [March 2021](https://rewindex.com/company/substack/2021/03.md) · Next: [May 2021](https://rewindex.com/company/substack/2021/05.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 |
| --- | --- | --- | --- | --- | --- |
| [Missing data in subscriber count graphs and empty results for publication search](https://rewindex.com/company/substack/incidents/kqyy80cgc8r4.md) | major | 2021-04-23 23:14 UTC | 2021-04-24 02:04 UTC | 2.8 h | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Draft saving is broken](https://rewindex.com/company/substack/incidents/73n56mh1bwxw.md) | none | 2021-04-16 18:37 UTC | 2021-04-16 19:28 UTC | 51 min | resolved |
| [Missing data in subscriber count graphs and empty results for publication search](https://rewindex.com/company/substack/incidents/kqyy80cgc8r4.md) | major | 2021-04-23 23:14 UTC | 2021-04-24 02:04 UTC | 2.8 h | resolved |

## Cite this

Substack posted 2 status incidents in April 2021 (1 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/substack/2021/04
- Citation: Substack, “Substack in April 2021” (2021-04-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/substack/2021/04 (CC BY 4.0).
- Markdown link: `[Substack: Substack in April 2021 (2021-04-01)](https://rewindex.com/company/substack/2021/04)`


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Canonical: https://rewindex.com/company/substack/2021/04 · Markdown: https://rewindex.com/company/substack/2021/04.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T10:18:05.789Z