Transactional Email
API & SMTP Relay
Send transactional emails at scale with high deliverability, real-time analytics, and developer-friendly APIs. Powered by high-reputation infrastructure.
Why InteSys Transactional Email?
Years of experience delivering emails to inboxes, not spam folders.
Inbox Deliverability
High-reputation sending servers with continuous monitoring. Proprietary tools track inbox placement across major providers in real time.
SMTP & REST API
Send via standard SMTP relay or our RESTful API. Developer-friendly documentation, SDKs, and quick integration with any application.
Real-Time Analytics
Complete delivery tracking with opens, clicks, bounces, and complaints. 30-day log retention with upgrade options for compliance.
Webhooks & Events
Real-time event notifications for deliveries, bounces, opens, and clicks. Integrate with your application for automated workflows.
Security & Compliance
Free SSL via Let's Encrypt, DKIM/SPF/DMARC authentication, and LGPD-compliant data handling. Encrypted transport for every message.
Scalable Infrastructure
From 5,000 to millions of emails per month. Dedicated IPs available for high-volume senders who need full reputation control.
Built for Developers, Designed for Reliability
Simple, Transparent Pricing
Pay only for what you send. No hidden fees, no contracts.
You always pay the cheapest rate for your sending volume -- even if that means staying on a smaller plan and paying for overage. We automatically calculate the most economical option across all 14 available plans.
Calculate your ideal plan
Move the slider to the number of emails you send per month.
Plan applied
--
Overage
--
Estimated monthly total
--
More than 600,000 sends/month? Talk to our team for a custom plan.
Full pricing table
| Sends/month | Monthly price | Overage (per send) |
|---|---|---|
| 5,000 | R$ 45.00 | R$ 0.00470 |
| 10,000 | R$ 60.00 | R$ 0.00450 |
| 25,000 | R$ 70.00 | R$ 0.00400 |
| 30,000 | R$ 80.00 | R$ 0.00300 |
| 50,000 | R$ 110.00 | R$ 0.00229 |
| 60,000 | R$ 120.00 | R$ 0.00229 |
| 90,000 | R$ 172.00 | R$ 0.00228 |
| 100,000 | R$ 190.00 | R$ 0.00227 |
| 120,000 | R$ 220.00 | R$ 0.00227 |
| 150,000 | R$ 280.00 | R$ 0.00226 |
| 180,000 | R$ 340.00 | R$ 0.00225 |
| 250,000 | R$ 350.00 | R$ 0.00215 |
| 500,000 | R$ 550.00 | R$ 0.00210 |
| 600,000 | R$ 650.00 | R$ 0.00205 |
All plans include: SMTP + API, unlimited domains, 30-day logs, 15 MB per email, SSL, delivery & bounce tracking
Need more? Contact us for custom volume pricing or dedicated infrastructure.
Contact SalesReady to improve your email delivery?
Start sending transactional emails with confidence. Our team will help you get set up.
Contact Sales