# Substack in April 2025: incidents, uptime and changes

> Substack in April 2025: 2 incidents on its status page (1 major or critical), 99.85% 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/2025/04
Last updated: 2025-05-02T01:21:49Z

- Incidents posted: 2 (major/critical: 1) · Maintenance: 0
- By vendor impact label: major 1, minor 1
- Uptime (vendor-reported): 99.85% free of major/critical incidents, 98.40% free of any incident; outage time 1 h 2 min, incident time 11 h 30 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [March 2025](https://rewindex.com/company/substack/2025/03.md) · Next: [May 2025](https://rewindex.com/company/substack/2025/05.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 |
| --- | --- | --- | --- | --- | --- |
| [Increased error rates](https://rewindex.com/company/substack/incidents/dt9f5z1rt5wg.md) | major | 2025-04-29 18:15 UTC | 2025-04-29 19:16 UTC | 1.0 h | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Increased error rates](https://rewindex.com/company/substack/incidents/dt9f5z1rt5wg.md) | major | 2025-04-29 18:15 UTC | 2025-04-29 19:16 UTC | 1.0 h | resolved |
| [Email analytics backup](https://rewindex.com/company/substack/incidents/878n8nfcg4hn.md) | minor | 2025-04-30 13:31 UTC | 2025-05-02 01:21 UTC | 36 h | resolved |

## Cite this

Substack posted 2 status incidents in April 2025 (1 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/substack/2025/04
- Citation: Substack, “Substack in April 2025” (2025-04-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/substack/2025/04 (CC BY 4.0).
- Markdown link: `[Substack: Substack in April 2025 (2025-04-01)](https://rewindex.com/company/substack/2025/04)`


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Canonical: https://rewindex.com/company/substack/2025/04 · Markdown: https://rewindex.com/company/substack/2025/04.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T13:32:55.684Z