Email infrastructure.
With fewer loose ends.
ZapSMTP brings sending, receiving, testing, and delivery diagnostics into one email platform for developers and product teams.
From the request to the result
An email request is only the beginning. Your application also needs events, inbound replies, test scenarios, and tools to investigate delivery problems. We bring those workflows together around an API and an SMTP relay.
Built around the code you use
Send with direct HTTP requests, a compatible SDK, or your existing SMTP client. Use the integration guide to verify your domain, configure credentials, and connect event handlers.
Show the work
We prefer code samples, useful diagnostics, and explicit limits to unmeasured uptime claims or delivery guarantees. Review the published plan limits and integration guide to understand how the service fits your application.
Talk to the teamSend your first email.
Your next email starts with a few lines of code.