# ActiveCampaign: Transactional Email Failures

- Impact (vendor’s label): critical
- Status: resolved
- Started: 2026-09-28 15:05 UTC · Resolved: 2026-09-28 18:55 UTC · Duration: 3.8 h
- Updates: 5 · Affected components: Email, Message Sending Availability - Email
- [Vendor status page: https://stspg.io/585zf902skjb](https://stspg.io/585zf902skjb)
- [Company: ActiveCampaign](https://rewindex.com/company/activecampaign.md)

## Summary

ActiveCampaign reported a critical outage preventing transactional emails from sending, starting at 2026-09-28 15:05 UTC and resolved at 2026-09-28 18:55 UTC, lasting 3 h 50 min. Backlogged messages began sending at 15:16 UTC, and a fix was implemented at 15:22 UTC. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2026-09-28 15:05 UTC: Transactional email is currently failing to send. Engineering is investigating the root cause now and will report updates every 20 minutes.
- **identified** 2026-09-28 15:16 UTC: The issue has been identified and the backlogged messages have started to send. Engineering is working to expedite the catch up.
- **monitoring** 2026-09-28 15:22 UTC: A fix has been implemented and we are monitoring the results.
- **monitoring** 2026-09-28 15:30 UTC: The backlogged messages are rapidly catching up. We expect full resolution within 20 minutes.
- **resolved** 2026-09-28 18:55 UTC: This incident has been resolved.

## Rewindex changes for this incident

- 2026-09-28 15:05 UTC: [Critical incident: Transactional Email Failures](https://rewindex.com/change/iddf557e8612c5d.md)


---
Canonical: https://rewindex.com/company/activecampaign/incidents/f5ztm4glsjwp · Markdown: https://rewindex.com/company/activecampaign/incidents/f5ztm4glsjwp.md · JSON: https://rewindex.com/api/v1/companies/activecampaign/incidents/f5ztm4glsjwp · Generated 2026-10-18T11:27:46.510Z