Is Postmark down?
No, Postmark is not down.
Postmark’s status page reports no incidents, api.postmarkapp.com responded from 6 regions, and nobody reported problems in the last hour.
- Official statusNo incidentsstatus.postmarkapp.com
- Reachable6 of 6 regionsPostmark API · api.postmarkapp.com
- Reports in the last hour0Normal
Postmark’s status page
From status.postmarkapp.com. Read at
- General APIOperational
- Sending APIOperational
- Receiving APIOperational
- Sandbox APIOperational
- General SMTPOperational
- Sending SMTPOperational
- Receiving SMTPOperational
- InboundOperational
Show all 15 components
- WebhooksOperational
- General Web AppOperational
- Login Web AppOperational
- Billing & Subscriptions Web AppOperational
- General AnalyticsOperational
- Statistics AnalyticsOperational
- Link Tracking AnalyticsOperational
Not working for me
Pick what’s broken. Reports from everyone show up on the chart below within 5 minutes.
Last 24 hours
No problems in the last 24 hours, median response 312 ms, and 0 reports.
- Operational
- Degraded
- Partial outage
- Major outage
- No data
- Reachability check (api.postmarkapp.com)
By region
| Region | Postmark API api.postmarkapp.com |
|---|---|
| N. Virginia us-east-1 | 401 · 56 ms |
| Oregon us-west-2 | 401 · 162 ms |
| Frankfurt eu-central-1 | 401 · 292 ms |
| Singapore ap-southeast-1 | 401 · 655 ms |
| Tokyo ap-northeast-1 | 401 · 404 ms |
| São Paulo sa-east-1 | 401 · 377 ms |
Two regions check Postmark every minute, and any failure is rechecked from all of them. Each row shows the latest result. How we check
Last 90 days
We have checked Postmark ourselves since Oct 28, 2026. Earlier days come from its status page.
9 days with problems in the last 90 days.
Recent incidents
Incidents: 3 in the last 30 days and 8 in the last 90, lasting a median of 2 h 42 min.
- SMS codes for two-factor authentication may not arriveDegraded1 h 43 min
- Delayed Inbound Message ProcessingDegraded2 h 5 min
- Delayed Message DeliveryDegraded3 h 58 min
- Delayed Message DeliveryDegraded20 min
- Web-App Page Loading IssuesDegraded1 h 33 min
- Delays in Stats DataDegraded3 h 20 min
- Open Webhook DelaysDegraded1 day
- Sending DelaysDegraded16 h 50 min
If Postmark isn’t working for you
Postmark is ActiveCampaign's email delivery service focused on fast, reliable transactional email.
Common Postmark errors
| Error | What it means | Usually | What to do |
|---|---|---|---|
406 Inactive recipient | The recipient was marked inactive after a hard bounce, spam complaint or manual suppression. | Your side | Check the suppression list and reactivate the address only if appropriate. Source |
429 Rate Limit Exceeded | You are making requests at a rate that exceeds acceptable use of the API. | Your side | Reduce your request rate. Source |
500 Internal Server Error | An issue with Postmark's servers; the message is usually lost and Postmark is notified. | An outage | Retry the send and check status.postmarkapp.com. Source |
503 Service Unavailable | Postmark API services are in planned maintenance. | An outage | Retry after the maintenance window. Source |
Is it just you?
- Check the API response: 4xx codes describe your request or recipient, while 500 and 503 come from Postmark.
- Look at the message stream's Activity page to see whether an email was sent, bounced or suppressed.
- Check status.postmarkapp.com for sending and API incidents.
Alternatives to Postmark
Questions
An inactive recipient error means the address hard bounced, complained or was suppressed. Postmark will not send to it until it is reactivated.
A 500 or 503 response from the API points to Postmark, and 503 is used during planned maintenance. Most other errors describe your request or recipient.
Sources: postmarkapp.com, status.postmarkapp.com
Get alerted when Postmark breaks your app.
If your product or your team depends on Postmark, its outage is your outage, and your users will blame you, not Postmark. Point a Site Qwality monitor at the Postmark endpoint you actually rely on, put your own site next to it, and we alert you on Slack, email, SMS or any webhook the moment either one stops answering.