List of Top SMS APIs to Send Bulk SMS, Transactional SMS, OTP SMS Worldwide (Updated on 2020)

  1. SMS.to API — They are are a licensed telecom company in Cyprus, have global quality coverage, and over 100 interconnections. They can offer well priced and high quality messaging for your customers. They are in Pay as You Go model. Just add funds and start sending transactional or Promotional SMS. They have some advanced features like shortlinks, personalization messages, Support Unicode characters, Shortcodes, Viber messaging. SMS scheduling, 2way SMS, toll-free Optout, and in-depth SMS delivery reports. They offer Powerful HTTP API / SMPP API’s for integrations with your Application, ERP/CRM systems, or high volume messaging.
  2. Msg91 communication API — Is an Indian Company. They offer their SMS API as Communication API that you can use to send SMS notifications, 2FA verification SMS, Promotional SMS, Order updates, etc. They also support Unicode messages, 2way SMS, virtual numbers, and has many other features. They are in Credits based system, so you buy credits and then used it to send SMS. The charges of any message depend on the number of credits consumed, the pricing per credit is according to the country to which you are sending the message. The least amount of credits that can be purchased is 2500 in Promotional, Transactional & SendOTP.
  3. Textlocal API — is a UK based company, and they have local subsidiaries in most of the countries. Their scalable SMS API and integrations allow you to add SMS to your existing communication strategy seamlessly. So if you want to send SMS to a specific country, you can use their local subsidiaries to get local options and features. Their pricing also based on a credits system; depending on the country you are sending to, the message will cost between 0.2 and 2.5 SMS credits. Their pricing isn’t so transparent as they sell a package of loans, which you can see only after creating an account not upfront. However, from their local website, you may get better pricing in your local currency.
  4. MessageBird API — You can use their API to send and receive SMS from all over the world. They have direct connections with over 240 carriers in 200 countries that give you best-in-class deliverability around the globe. Their SMS cost also varies by the country you send the SMS. However, if you purchase an SMS Number, the inbound SMS will be free though it may vary by the country number you choose.

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