title: “EffiLink REST API: Cloud Messaging for Email and SMS” sidebarTitle: “Overview” description: “EffiLink is a cloud messaging REST API for sending transactional email, marketing campaigns, and SMS with real-time delivery tracking and webhooks.”
EffiLink gives you a single REST API to send transactional emails, run marketing campaigns, deliver SMS messages, and receive real-time engagement events via webhooks. All of this runs on EffiLink’s infrastructure atapi.effilink.co, so you focus on your product, not on deliverability.
What you can do with EffiLink
Transactional Email
Send triggered emails like order confirmations, password resets, and shipping notifications.
Marketing Campaigns
Create and deliver newsletters, promotions, and announcements to contact lists.
SMS
Send individual or bulk SMS messages for notifications and promotions.
Webhooks
Receive real-time events for every delivery, open, click, bounce, and unsubscribe.
API fundamentals
EffiLink provides geographically distributed API endpoints to ensure high availability and optimal access performance. Please use the endpoint closest to your application’s deployment region: - Mainland China:Content-Type: application/json
- Include an authentication header (ApiKey or OAuth)
Parameter names are case-sensitive. All request and response data uses UTF-8 encoding.
HTTP response codes
Pagination
List and search endpoints return paginated results. Use these query parameters to navigate pages:Next steps
Quick Start
Send your first email in under 5 minutes.
Authentication
Learn how to authenticate API requests.