Clickatell SMS API

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Score6.6

Rank#3 of 67

PriceFree

Free planYes

Free trialYes

Runs onAPI, Web

Summary

Clickatell SMS API provides APIs for sending and receiving SMS for customer support, communications, promotions, and two-factor authentication notifications. Its platform offers a basic HTTP API and a REST-based One API. Businesses can use short codes or long numbers for two-way SMS, and 10DLC numbers for US application-to-person messaging. The cloud web interface includes reporting dashboards, role-based access control, and a sandbox for free testing. Clickatell says its infrastructure covers more than 220 territories and 1,000 mobile networks, and selects the highest-quality available route for each message. One API supports SMS and WhatsApp without separate channel programming. The product page says business-customer conversations have default end-to-end encryption. A free account is available, while the Prepaid package charges for outgoing messages on a pay-as-you-go basis; costs vary by destination and message type. Connect includes standard support and a 99.98% uptime SLA. Pricing is available on request, with the product directing customers to an estimator for message costs.

Who it is for

It suits businesses that need programmable SMS for customer communication, promotions, support, or authentication notifications. The API and web tools offer options for teams managing two-way messaging and reporting.

What is good

Offers HTTP and REST-based API options.
Supports two-way SMS using short codes or long numbers.
Web interface includes dashboards and role-based access.
Sandbox provides unlimited free testing.

What to know first

Message costs vary by destination and message type.
Pricing for Connect is available on request.

Verdict

Clickatell combines SMS APIs, two-way messaging, and web-based reporting tools. A free account and testing sandbox are available, while sending messages through Prepaid incurs destination- and message-dependent costs.

Clickatell SMS API plans and pricing

All plans

Prepaid Free Pay as you go for outgoing messages; message prices vary by destination and message type clickatell.com · 2 Oct 2026

Connect Not published Enterprise SMS via API and web app clickatell.com · 2 Oct 2026

Compared on transactional SMS software

Two-way SMS: Yesclickatell.com
Inbound webhooks: Yesclickatell.com
Short code support: Yesclickatell.com
Toll-free numbers: Yesclickatell.com

Facts

Purpose: Clickatell provides APIs for sending and receiving SMS for customer support, communications, promotions, and two-factor authentication notifications.clickatell.com · 2 Oct 2026
API options: The SMS platform offers a basic HTTP API and a REST-based One API.clickatell.com · 2 Oct 2026
Coverage: Clickatell says its infrastructure covers more than 220 territories and 1,000 mobile networks.clickatell.com · 2 Oct 2026
Routing: The service selects the highest-quality routes available when a message is sent.clickatell.com · 2 Oct 2026
Two-way messaging: Businesses can use short codes or long numbers for two-way SMS, and 10DLC numbers for A2P messaging in the United States.clickatell.com · 2 Oct 2026
Web tools: The cloud-hosted web interface includes reporting dashboards, role-based access control, and a sandbox with unlimited free testing.clickatell.com · 2 Oct 2026
Integrations: Clickatell's One API supports SMS and WhatsApp without requiring separate channel programming.clickatell.com · 2 Oct 2026
Encryption: The product page says conversations between businesses and customers are private with default end-to-end encryption.clickatell.com · 2 Oct 2026
Free access: Clickatell invites users to register a free account, and its Prepaid package is described as pay-as-you-go for outgoing messages.clickatell.com · 2 Oct 2026
Pricing: The product page directs customers to an estimator because SMS costs depend on the destination and message type.clickatell.com · 2 Oct 2026
Support and service: Clickatell's Connect package includes standard support and a 99.98% uptime SLA.guides.clickatell.com · 2 Oct 2026
Compliance: The Connect package page lists ISO 27001, SOC 2 Type 2, GDPR, CCPA, and POPIA under regulatory compliance.guides.clickatell.com · 2 Oct 2026
Company history: Clickatell says it began in Cape Town in 2000, connecting internet businesses with consumers through SMS.clickatell.com · 2 Oct 2026