Reliable email delivery for developers & marketers - with SMTP, API, managed sending, warm-up automation, and deliverability insights that drive performance.
* No credit card required
$48575
A modern email platform crafted for reliability and performance. Experience seamless integration, high-speed sending, and total visibility across every campaign. From API to analytics - everything you need to send smarter, faster, and stronger.
REST API, SMTP relay, templating, webhooks, event logs and sandbox testing. Designed for reliability and observability.
curl -X POST "https://api.iosend.com/v1/send"
-H "Authorization: Bearer YOUR_API_KEY"
-H "Content-Type: application/json"
-d '{"from":"no-reply@yourdomain.com","to":"user@example.com",
"subject":"Welcome","text":"Hello!"}'
SDKs available: Node, Python, PHP, Java.
Create and optimize campaigns with iosend’s smart marketing suite. Build beautiful emails with the drag-and-drop builder, personalize content with dynamic fields, and run A/B tests to improve engagement. Manage suppression lists, automate domain warm-up, and track detailed analytics that connect deliverability, engagement, and campaign performance - all in one unified dashboard.
