ClickSend REST API v3

clicksend.com

Sends and receives SMS, MMS and other messaging communications programmatically via a cloud REST API.

The ClickSend REST API v3 API uses basic authentication; has usage based pricing; offers a free tier (Free trial / free account available to start sending). Verified 2026-07-12 with per-field source links.

Communication Verified 2026-07-12 medium confidence

Base URL

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no source

Auth

basic

clicksend.com ↗

Free tier

Free trial / free account available to start sending

clicksend.com ↗

Pricing model

usage_based

clicksend.com ↗

Pricing

Pay-as-you-go: top up balance and pay per message; volume discounts by top-up tier (Boost from $20, Growth from $500 save 7%, Scale from $3,000 save 14%, Enterprise from $10,000 save 21%); inbound SMS free; additional carrier fees apply

clicksend.com ↗

Rate limits

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no source

OpenAPI spec

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no source

MCP server

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no source