Powerful SMTP Infrastructure for Modern Email Sending

Send transactional, marketing, and cold emails with unmatched deliverability, blazing-fast infrastructure, and enterprise-grade reliability.

Email Analytics Dashboard

99.99%

Uptime

10M+

Emails/Day

120+

Countries

AI

Optimization

24/7

Realtime Analytics

Advanced Email Infrastructure

Enterprise-grade SMTP infrastructure engineered for modern businesses, developers, and high-volume email operations.

SMTP Relay

Ultra-fast global email delivery with intelligent routing.

Dedicated IPs

Protect sender reputation with isolated premium infrastructure.

Email Warmup

AI-powered warmup automation for maximum inbox placement.

API & Webhooks

Developer-first integrations with realtime event tracking.

Smart Routing

Automatically optimize delivery paths for performance.

Realtime Tracking

Track opens, clicks, bounces, and inbox placement instantly.

Simple Transparent Pricing

Scalable plans built for startups, agencies, and enterprise senders.

Starter

$29

50,000 Emails / month

  • SMTP Relay
  • API Access
  • Email Tracking
  • Shared IPs

Enterprise

$399

Unlimited Infrastructure

  • Custom Infrastructure
  • Advanced Analytics
  • Enterprise SLA
  • 24/7 Dedicated Support

Trusted by High-Growth Teams

“SunSMTP transformed our deliverability rates overnight. The infrastructure is unbelievably fast.”

Sarah Chen — CTO, Nexora

“Best SMTP platform we've used. The analytics and API experience feel world-class.”

David Ross — Founder, MailScale

“Our inbox placement improved dramatically after switching to SunSMTP.”

Emily Carter — Growth Lead, HyperSend

Frequently Asked Questions

How fast can I start sending emails?
You can start sending within minutes after domain verification.
Do you provide dedicated IPs?
Yes. Growth and Enterprise plans include premium dedicated IP options.

Scale Your Email Infrastructure with SunSMTP

Built for modern businesses, agencies, and developers.