Operational status: All systems operational
SMTP relay, API, and dashboard targets 99.9% uptime. Delivery times may vary by recipient provider load and your sender reputation.
SMTPServer delivery status.
Transactional mail must arrive immediately — not eventually. We monitor average delivery times to major mailbox providers and publish infrastructure health here.
Current delivery performance
Measured average delivery times from SMTPServer infrastructure (homepage metrics, Jul 2026).
5.29s
Gmail
4.99s
Hotmail
8.32s
Yahoo
119.12s
Apple
What we monitor
SMTP & API
Outbound relay and REST API availability for transactional and bulk sends.
Delivery latency
Time from accept to major provider handoff — benchmarked per mailbox provider.
IP reputation
Continuous monitoring of dedicated IP pools — see enterprise outbound filtering.
Delivery issues on your account?
Run the Mail Tester and blacklist check, then contact support Mon–Fri 07:30–16:30 GMT+2.