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Business SMS API

by ClickSend

ClickSend business text messaging by web app or API, for sending SMS worldwide.

API

How MSPs use it: resell or bundle it for clients

About

Get your message in their hands, fast. Business text messaging is perfect for growing businesses that want to reach, convert, close, and support customers — boom. Try our SMS platform for free and see what the fuss is about.

Overview

ClickSend is a business SMS service you can use in three ways. From the browser dashboard, you register a number, upload contacts, send campaigns and receive replies for free. Email-to-SMS converts messages from almost any email provider into texts, and there is an Outlook plugin. The SMS API builds messaging into your own apps. You can set up no-code or coded automations for recurring messages. ClickSend handles promotional, transactional and two-way conversational messages, such as customer support by text. Prebuilt integrations include WHMCS and email marketing tools.

It suits MSPs that want to send client alerts or appointment texts, or build SMS into their PSA and billing workflows.

AI & Automation

API

Dedicated API for sending, receiving, and tracking SMS messages.

Selling this to clients

Clients pay for this one: MSPs resell it or bundle it into a managed service rather than running it for themselves.

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ClickSend

4 products · View profile

Medium · 50-200 employees · 13y in business

Updated Nov 8, 2026