What you can do with ClickSend
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42 things you can do
ClickSend
ClickSend is a cloud communications company providing a single REST API for business messaging across SMS, MMS, voice / text-to-speech, transactional email, and physical post - letters and postcards printed and mailed globally. The v3 API (rest.clicksend.com/v3) uses HTTP Basic authentication with a username and API key and covers sending, delivery receipts, inbound handling, contacts and lists, a