SMS API Overview

The SMS API lets you send text messages globally to any mobile number. SendAPI routes messages through multiple carrier-grade providers, automatically selecting the cheapest and most reliable route for each destination country.

Base URL

https://sendapi.co/v1/sms

Authentication

Authorization: Bearer sk_live_YOUR_API_KEY

Endpoints

Method	Endpoint	Description
POST	/v1/sms/send	Send a single SMS
POST	/v1/sms/send-bulk	Send bulk SMS
GET	/v1/sms/status/{id}	Get delivery status
GET	/v1/sms/history	List SMS history
GET	/v1/sms/pricing	Get per-country pricing

Provider Routing

SendAPI uses intelligent multi-provider routing to maximize deliverability:

• Primary: Best price/reliability for the destination
• Fallback: Automatic failover if the primary returns a 5xx error
• Messages are sent with E.164-normalized phone numbers

Pricing Model

SMS is billed per message segment (160 characters per segment for standard SMS, 153 for multi-part). Pricing varies by destination country. See the SMS Pricing page for a full rate card.

Rate Limits

Plan	Messages per minute	Messages per day
Starter	60	1,000
Growth	600	50,000
Business	6,000	Unlimited