Send critical system emails with high deliverability and enterprise-grade reliability.
Reliable SMTP relay infrastructure for sending transactional emails at scale.
RESTful API designed for developers with simple integration and fast delivery.
Monitor delivery rates, opens, bounces, and system performance in real time.
Optimized IP reputation and routing to ensure inbox placement.
Encrypted communication, authentication, and abuse monitoring.
Efficient queueing ensures reliable email processing even under load.
Connect using SMTP credentials or REST API.
Trigger transactional emails like OTPs or notifications.
Track delivery, bounces, and system metrics.
Emails Sent
Delivery Rate
Bounce Rate
POST /send-email
{
"to": "user@example.com",
"subject": "Verification Code",
"body": "Your OTP is 123456"
}
SMTP Core provides SDKs and simple integration for Node.js, Python, and more.
SMTP Core is a US-based cloud communication platform focused on providing reliable transactional email infrastructure. Our mission is to deliver secure, scalable, and compliant email services for developers and businesses worldwide.
Email: support@smtpcore.us
Address: 1201 Main Street, Suite 500, Wilmington, DE 19801, USA
By using SMTP Core, you agree to comply with all applicable laws and regulations. Users may only send transactional, opt-in emails. Abuse or misuse of the platform may result in suspension or termination of services.
SMTP Core respects user privacy. We collect minimal data required to operate our services. We do not sell personal data. Data is processed in compliance with GDPR and applicable laws.
SMTP Core strictly prohibits unsolicited bulk email. Only permission-based transactional emails are allowed. Violations will result in immediate account suspension.
Users must not use SMTP Core for spam, phishing, fraud, or illegal activities. We actively monitor abuse and enforce strict compliance standards including CAN-SPAM.