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
99.98 % 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
99.89 % uptime
Today
Promotions Operational
90 days ago
100.0 % uptime
Today
Delivery Operational
90 days ago
100.0 % uptime
Today
Outbound Email Deliverability (Shared Pools) Operational
90 days ago
100.0 % uptime
Today
Services Operational
90 days ago
99.96 % uptime
Today
Authorization Operational
90 days ago
100.0 % uptime
Today
Automation Operational
90 days ago
99.89 % uptime
Today
Curation Operational
90 days ago
99.97 % uptime
Today
Documentation Operational
90 days ago
100.0 % uptime
Today
Email Service Provider Operational
90 days ago
99.89 % uptime
Today
Metrics Operational
90 days ago
100.0 % uptime
Today
Notifications 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.

Dec 29, 2025

No incidents reported today.

Dec 28, 2025

No incidents reported.

Dec 27, 2025
Increased Rate of Delays [Yahoo!]
Resolved - This incident has been resolved.
Dec 27, 22:00 EST
Update - We appreciate your patience. This status is likely to stay active for the rest of the afternoon and evening, but we can clarify the spike in delays are almost entirely centralized around Yahoo! mailboxes (and those that fall under its umbrella, AOL, etc.].
Dec 26, 16:06 EST
Monitoring - We are experiencing an increased relate of email delivery delays for newsletters sent to unengaged audiences and test audiences, which means that it may be several hours before newsletters are considered fully delivered to an entire list. These delays are affecting shared senders, and not audience members that Letterhead identifies as "engaged". If your list has a high percentage of unengaged recipients, you may experience delays in your newsletter metrics.

You do not have to do anything: don't resend your emails, these delays are fundamentally triggered by mailbox providers. Letterhead will continuously retry to deliver these emails automatically.
Dec 26, 11:52 EST
Dec 26, 2025
Dec 25, 2025

No incidents reported.

Dec 24, 2025

No incidents reported.

Dec 23, 2025

No incidents reported.

Dec 22, 2025

No incidents reported.

Dec 21, 2025

No incidents reported.

Dec 20, 2025

No incidents reported.

Dec 19, 2025

No incidents reported.

Dec 18, 2025

No incidents reported.

Dec 17, 2025

No incidents reported.

Dec 16, 2025

No incidents reported.

Dec 15, 2025
Image Uploading Latency
Resolved - All's well. Our provider has addressed the latency issues and we have seen reduced latency on our side.
Dec 15, 22:57 EST
Update - Our upstream provider for media transformation (Uploadcare) is still experiencing latency. Expect uploads to take longer than normal, and sometimes fail. If they do fail, try again.
Dec 15, 19:44 EST
Update - We're still seeing errors in our logs and so we are resetting the status to "degraded performance."
Dec 15, 17:14 EST
Monitoring - Good news 👀. A fix has been implemented. We will be monitoring results.
Dec 15, 17:01 EST
Update - It's been a moment since our provider announced that they were implementing a fix. They haven't made any announcement themselves since, but we're noticing fewer errors on our end.
Dec 15, 15:24 EST
Update - Our upstream provider has identified the issue and is implementing a fix.
Dec 15, 14:29 EST
Update - We have identified that the issue is related to our CDN provider, upstream from us. We will continue to monitor. Apologies for the inconvenience.
Dec 15, 14:04 EST
Identified - We are experiencing higher latency when uploading images, to the extent upload are taking a significant amount of time to finish or they fail.
Dec 15, 13:17 EST
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