Mailgun is a developer-focused email delivery platform owned by Sinch, providing transactional email sending, email validation, inbound routing, and analytics for over 150,000 businesses. The platform offers both RESTful API and SMTP relay for email delivery, with features including email parsing, mailing list management, A/B testing for templates, and granular delivery tracking. Mailgun is popular among developers who need programmable email infrastructure with detailed logs and flexible routing rules that integrate into custom application workflows.
Mailgun outages commonly involve delivery pipeline congestion causing email delays, API rate limiting during high-volume sending periods, and SMTP relay authentication failures. Email validation service outages are independent from delivery infrastructure. Inbound email processing can fail due to MX record routing issues or parsing backend failures. Webhook delivery for tracking events (opens, clicks, bounces) can lag significantly behind actual email delivery during infrastructure strain.
When Mailgun goes down, transactional emails from applications stop delivering, affecting password resets, notification emails, and account verification flows. Marketing campaigns in progress may be partially delivered, splitting audiences. Email validation API failures prevent sign-up forms from verifying email addresses. Businesses using Mailgun for bulk email operations experience compounding delays as queued messages create delivery backlogs that extend well beyond the outage recovery window.
Use this page to check Mailgun availability. Mailgun outages can affect sending, inbound processing, or the validation API independently. Check status.mailgun.com for official component-level status. If emails are accepted by the API but not arriving, check your Mailgun logs for delivery status details before assuming an outage.
Email delivery failures can result from Mailgun outages, domain DNS misconfiguration (SPF, DKIM), sender reputation issues, or recipient server rejection. Check your Mailgun dashboard logs for specific error messages. If your domain verification has lapsed, emails may be silently dropped. Verify your sending domain DNS records are current.
Mailgun is more developer-focused with granular API controls and email parsing features. SendGrid offers a broader marketing platform with visual template builders. Both provide reliable transactional email delivery. Mailgun's log retention and debugging tools are preferred by developers who need detailed delivery diagnostics. SendGrid has broader market presence.
Queue outgoing emails in your application and retry after recovery. For critical flows like password resets, implement a fallback email provider. Mailgun typically processes queued emails after recovery, but extended outages can create backlogs. Monitor status.mailgun.com for estimated resolution times and configure PinusX for instant alerts.
Monitor Mailgun's API endpoints with PinusX Uptime Monitor for free. Get Slack and email alerts (through a different provider) within 60 seconds of any disruption. Also configure Mailgun's webhook events for real-time delivery tracking to catch deliverability issues that may not be full outages.
Monitor Mailgun uptime with PinusX. Get instant alerts when services go down.