Postmark Status: How to Check If Postmark Is Down Right Now (2026)
Updated June 2026 · 6 min read · By API Status Check
Quick Answer: Check Postmark Status Now
Postmark is a developer-focused transactional email provider known for fast delivery and high inbox placement. When Postmark has issues, password reset emails stall, user confirmation emails queue up, and SaaS products lose functionality that depends on email delivery. Unlike consumer email problems, Postmark issues require understanding the distinction between platform outages and delivery failures — which are often two different things.
⚠️ Most Postmark Issues Are NOT Platform Outages
Before checking status.postmarkapp.com, check your Postmark message activity log first. Most email delivery problems are caused by:
- • Recipient on your suppression list (bounced previously)
- • SPF/DKIM not configured → emails going to spam
- • Sender signature not verified in Postmark
- • Recipient mail server rejecting based on content or rate limits
- • Messages queued but not yet delivered (Postmark shows 'Queued' status)
If the activity log shows 'Delivered' but the recipient hasn't received it, the issue is downstream of Postmark.
Understanding Postmark's Status Page (status.postmarkapp.com)
Postmark operates status.postmarkapp.com — its official status page. Postmark tracks transactional and broadcast delivery separately because they use different IP pools and infrastructure.
API (Transactional)
The Postmark REST API for sending single transactional emails. If this is down, POST /email calls return errors or time out. Password resets, welcome emails, and receipts rely on this.
SMTP (Transactional)
Postmark's SMTP relay for sending transactional email via SMTP connection. Used by apps configured with Postmark's SMTP credentials. SMTP and API run separately — one can fail while the other works.
Inbound Email Processing
Postmark's inbound email parsing feature, which receives email on your domain and POSTs parsed JSON to a webhook. Inbound failures mean incoming email is not processed or forwarded.
Webhooks / Callbacks
Delivery events (delivered, bounced, opened, clicked, spam complaints) POSTed to your application's webhook URL. Webhook delays mean your app's delivery tracking falls behind reality.
Web Dashboard
The Postmark account dashboard at account.postmarkapp.com. Used to check message activity, configure servers, manage templates, and view bounce reports. Dashboard issues don't affect email sending.
Broadcast Sending
Postmark's batch/broadcast stream for sending emails to many recipients (newsletters, bulk notifications). Broadcast uses separate IP pools from transactional — a broadcast issue won't affect transactional delivery.
What Postmark Status Colors Mean
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Try Better Stack Free →How to Diagnose Postmark Delivery Issues
Check the Postmark Activity Log
In your Postmark dashboard, go to Activity → search by recipient email. The status field tells you exactly what happened: Queued, Delivered, Bounced (Hard/Soft), Spam Complaint, or Suppressed. If Postmark shows 'Delivered', the email left Postmark — check the recipient's spam folder.
Check Postmark Activity →status.postmarkapp.com (Official)
Check the official status page for platform-wide issues. Relevant when many messages are failing simultaneously, API calls are timing out, or SMTP is rejecting connections.
Check status.postmarkapp.com →Check Your Suppression List
Postmark automatically suppresses recipients who have previously hard-bounced or reported spam. If emails to a specific address stopped working, check Suppressions in your dashboard. Legitimate addresses can be removed from suppression if the bounce was erroneous.
Verify SPF / DKIM Records
Unverified DNS records cause emails to go to spam or be rejected. Use mail-tester.com to send a test and check your score. Postmark requires both SPF (include:spf.mtasv.net) and DKIM TXT records in your DNS for reliable inbox placement.
Test with mail-tester.com →Test the API Directly
If you suspect an API issue, send a test email via the Postmark API with curl to isolate whether the problem is your application code or Postmark's infrastructure:
curl -X POST 'https://api.postmarkapp.com/email' \
-H 'Accept: application/json' \
-H 'Content-Type: application/json' \
-H 'X-Postmark-Server-Token: YOUR_SERVER_TOKEN' \
-d '{"From":"sender@example.com","To":"test@example.com","Subject":"Test","TextBody":"Test"}'Common Postmark Issues and What They Mean
"API returns 401 Unauthorized"Your X-Postmark-Server-Token header is invalid or missing. Verify the token in your Postmark server settings. This is not a platform outage."API returns 422 Unprocessable Entity"The request is malformed or rejected — not a Postmark outage. Check the error body for specifics: the From address may not be a verified sender signature, the recipient may be suppressed, or a required field is missing."Emails delivered to spam"Check SPF and DKIM records with mail-tester.com or MX Toolbox. If records are correct, your sending IP may have a temporary reputation issue — contact Postmark support. Postmark's transactional IPs have strong reputation, but sending patterns that look spammy can trigger filters."Hard bounce on valid address"If Postmark hard-bounced a valid address, the recipient mail server may have temporarily rejected it (often misclassified as hard bounce). Remove the address from your Postmark suppression list and retry. Monitor for re-bounce."Webhook deliveries delayed or missing"Postmark delivers webhook events (bounces, opens, clicks) with slight delays by design. If event delays exceed 15–30 minutes, check the Webhooks component on status.postmarkapp.com. Your webhook endpoint must return 2xx quickly — slow responses cause retries and apparent 'delays'."SMTP 535 Authentication Failed"Your SMTP credentials are incorrect. Postmark SMTP uses your Server API token as the password (not your Postmark account password). Username is always 'postmark'. Verify in Server Settings → SMTP."Inbound emails not being forwarded"The Inbound Processing component may be degraded. Also verify your MX record for the inbound domain points to inbound.postmarkapp.com and that your inbound webhook URL returns 200. Postmark retries failed inbound webhooks for up to 3 days.Postmark vs SendGrid vs Mailgun: Status Comparison
Postmark
status.postmarkapp.comSeparate transactional/broadcast tracking. Dashboard has per-message activity log.
SendGrid
status.sendgrid.comOwned by Twilio. Status includes marketing campaigns and transactional sending separately.
Full guide →Mailgun
status.mailgun.comEU and US regions tracked separately. Good for identifying region-specific delivery issues.
Frequently Asked Questions
Where is the official Postmark status page?
Postmark's official status page is status.postmarkapp.com. It tracks the API, SMTP, inbound processing, webhooks, and dashboard separately. For per-message delivery status, use the Activity Log in your Postmark account dashboard — the status page only shows platform-wide issues.
Why are emails sending successfully in Postmark but not arriving?
If Postmark's Activity Log shows 'Delivered', Postmark completed its job — the email was accepted by the recipient mail server. The most common reasons it doesn't appear in the inbox: spam filter classification, a rules-based folder filter, the wrong email address, or a full mailbox. Ask the recipient to check spam/junk.
How fast does Postmark normally deliver emails?
Postmark's typical transactional delivery time is under 10 seconds from API call to inbox for major email providers (Gmail, Outlook, Yahoo). Delivery times above 30 seconds usually indicate either a Postmark performance incident (check status.postmarkapp.com) or a recipient mail server rate-limiting incoming messages.
Does Postmark retry failed email sends?
Postmark retries soft bounces (temporary delivery failures like 4xx SMTP errors) for up to 72 hours. Hard bounces (permanent rejections like 5xx) are not retried and the address is automatically added to your suppression list. Webhook deliveries are retried for 3 days on failure.
What is Postmark's SLA / uptime guarantee?
Postmark targets 99.99% uptime for its sending infrastructure. Historical uptime data is available on status.postmarkapp.com under Uptime. Postmark (owned by ActiveCampaign) is known for very high transactional reliability compared to multi-purpose ESPs.
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