All Systems Operational

Uptime over the past 90 days. View historical uptime.
API Operational
90 days ago
100.0 % uptime
Today
Curations API Operational
90 days ago
100.0 % uptime
Today
Marketing API Operational
90 days ago
100.0 % uptime
Today
Applications Operational
90 days ago
100.0 % uptime
Today
Agents Operational
90 days ago
100.0 % uptime
Today
Archives Operational
90 days ago
100.0 % uptime
Today
Audience Operational
90 days ago
100.0 % uptime
Today
Composer Operational
90 days ago
100.0 % uptime
Today
Dashboards Operational
90 days ago
100.0 % uptime
Today
Newsletters Operational
90 days ago
100.0 % uptime
Today
Polls Operational
90 days ago
100.0 % uptime
Today
Promotions Operational
90 days ago
100.0 % uptime
Today
Delivery Operational
90 days ago
99.99 % uptime
Today
Outbound Email Deliverability (Shared Pools) Operational
90 days ago
99.99 % uptime
Today
Outbound Email Deliverability (Dedicated Pools) Operational
90 days ago
100.0 % uptime
Today
Integrations Operational
90 days ago
100.0 % uptime
Today
Mailchimp Operational
90 days ago
100.0 % uptime
Today
Services Operational
90 days ago
99.99 % uptime
Today
AI Operational
90 days ago
100.0 % uptime
Today
Authorization Operational
90 days ago
100.0 % uptime
Today
Automation Operational
90 days ago
100.0 % uptime
Today
Curation Operational
90 days ago
100.0 % uptime
Today
Documentation Operational
90 days ago
100.0 % uptime
Today
Email Service Provider Operational
90 days ago
99.99 % uptime
Today
Metrics Operational
90 days ago
100.0 % uptime
Today
Notifications Operational
90 days ago
100.0 % uptime
Today
Transactional Emails Operational
90 days ago
100.0 % uptime
Today
Webhooks Operational
90 days ago
100.0 % uptime
Today
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.

No incidents or maintenance related to this downtime.

Apr 5, 2026

No incidents reported today.

Apr 4, 2026

No incidents reported.

Apr 3, 2026

No incidents reported.

Apr 2, 2026
[Resolved] Login Screen Flagged Suspicious or Blocked by Spectrum, Xfinity
Resolved - This incident has been resolved.
Apr 2, 23:05 EDT
Monitoring - We have just now changed our auth domain to our alternate safe default. It will likely force you to log back in, but we can confirm previously blocked users are able to get back into Letterhead.
Apr 2, 17:20 EDT
Update - Thanks, everyone, for your patience. We can confirm that it's not the domain but the underlying IP, managed by Auth0, that has been flagged by a third-party trustware service used by some ISPs. For those users, when authorizing with Letterhead, the auth screen shows a warning as either suspicious - or not available at all. We are coordinating with Auth0, Spectrum, and Xfinity. In the meantime, we are deploying an alternate auth screen to let people into their system.
Apr 2, 16:58 EDT
Identified - We've identified that our Auth0 auth screen (auth.letterhead.email) has been flagged by Spectrum and Xfinity ISPs, which manage their own trustlist. We have reached out to both.
Apr 2, 16:19 EDT
Investigating - Resetting the status to "investigating." We had accidentally progressed the status to "identified" when sending the latest comm.
Apr 2, 15:30 EDT
Identified - This appears to affect customers on Xfinity and Spectrum. We have reached out Xfinity. We are also progressively checking to identify the source of the flag. Our most recent scan across 95 datasets returns a green reputation. We apologize for the frustration and will keep you updated. If you are prompted by your ISP to accept a risk before logging in, we encourage you to verify for yourself, first.
Apr 2, 15:25 EDT
Investigating - People are encountering an issue where our login page (auth.letterhead.email) has been flagged suspicious, preventing them from logging in without deliberately accepting that risk. We are currently investigating and think this might be a configuration issue upstream with our auth provider (Auth0), and in the meantime encourage people to verify for themselves the Google Safe Browsing status (https://transparencyreport.google.com/safe-browsing/search?url=letterhead.email&hl=en) before accepting that risk.
Apr 2, 15:13 EDT
Curations Sometimes Duplicating
Resolved - This incident has been resolved.
Apr 2, 07:13 EDT
Update - We are continuing to monitor for any further issues.
Apr 1, 19:52 EDT
Update - We will continue to monitor for several more hours, but so far so good.
Apr 1, 18:13 EDT
Monitoring - Things look pretty normal. We're going to monitor for awhile.
Apr 1, 14:49 EDT
Identified - We have observed elevated errors around curation creation and identified the underlying issue that may result in duplicate curations being created.
Apr 1, 14:00 EDT
Apr 1, 2026
[Monitoring] Mailchimp Saved Segment Elevated Errors
Resolved - This incident has been resolved.
Apr 1, 13:06 EDT
Monitoring - A fix has been implemented and we are monitoring the results.
Apr 1, 12:57 EDT
Identified - We've identified the underlying issue. Letterhead has a map of Mailchimp's saved segments, but they can sometimes drift or diverge, which will signal errors. We are confirming this isn't meaningfully impacting the end-user experience and aligning on a patch solution. Thanks for your patience.
Apr 1, 12:04 EDT
Investigating - We have seen elevated errors surrounding Mailchimp campaign creation from within Letterhead. We are currently looking into it.
Apr 1, 11:53 EDT
Mar 31, 2026

No incidents reported.

Mar 30, 2026
Mailchimp Elevated Errors
Resolved - This incident has been resolved.
Mar 30, 23:20 EDT
Monitoring - A fix has been implemented and we are monitoring the results.
Mar 30, 20:32 EDT
Identified - We have identified the underlying issues and we have already deployed a patch.
Mar 30, 19:25 EDT
Investigating - We are addressing elevated errors surrounding our Mailchimp integration, particularly around sending test emails with Mailchimp. Thanks for your patience.
Mar 30, 18:43 EDT
[Resolved] Dashboard Data Not Loading
Resolved - This incident has been resolved.
Mar 30, 16:20 EDT
Update - We are continuing to monitor for any further issues.
Mar 30, 16:02 EDT
Monitoring - A fix has been implemented and we are monitoring the results.
Mar 30, 16:02 EDT
Identified - We've identified an issue where dashboard data is sometimes not loading for users on the first couple of tabs. We are working on a solution.
Mar 30, 15:57 EDT
Mar 29, 2026

No incidents reported.

Mar 28, 2026

No incidents reported.

Mar 27, 2026

No incidents reported.

Mar 26, 2026

No incidents reported.

Mar 25, 2026

No incidents reported.

Mar 24, 2026
[Resolved] Audience Menu Glitch
Resolved - This incident has been resolved.
Mar 24, 07:51 EDT
Monitoring - A fix has been implemented and we are monitoring the results.
Mar 23, 20:18 EDT
Identified - We found the issue and we're noodling on a patch.
Mar 23, 19:50 EDT
Investigating - We're noticing that the Audience Menu isn't consistently available for channel administrators, either rendering as disabled or just not appearing at all. We're investigating the issue now.
Mar 23, 19:35 EDT
Mar 23, 2026
Channel Settings Update Errors
Resolved - This incident has been resolved.
Mar 23, 16:57 EDT
Investigating - We are seeing an elevated error rate when changing channel settings, such as changing your channel description. We are investigating.
Mar 23, 14:52 EDT
Mar 22, 2026

No incidents reported.

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