Developers
Build on SMTPmart
An API reference, SMTP setup guide, and webhook documentation for integrating sending, delivery events, and account data into your own product.
API Reference
Our REST API covers sending, contacts, templates, and domain management, authenticated with a single API key. Full endpoint-by-endpoint documentation, including request and response examples, is available from your dashboard once your account is set up.
SMTP Setup
Connect any application or existing mailer to SMTPmart with standard SMTP credentials — host, port, username, and password — issued from your dashboard after signup. Dedicated IP and guided warmup are available for higher-volume senders.
Webhooks
Subscribe to real-time delivery events — opens, clicks, bounces, and spam complaints — posted to an endpoint you control as they happen, so your application can react without polling for status.
Ready to start building?
Create an account to generate an API key and get your SMTP credentials.