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SMS API

Let's build something special
Flexible messaging solutions
Popular Snippets
  • Send SMS
  • Get SMS Responses
  • Get SMS Stats
  • Format Number
  • Lease Number
  • Optout List Number
  • Add List
  • Remove List
curl https://api.transmitsms.com/send-sms.json \
  -u [API Key]:[API Secret] \
  -d message='[Insert Message]' \
  -d to=[Phone Number 1],[Phone Number 2],[Phone Number 3]
curl https://api.transmitsms.com/get-sms-responses.json \
  -u [API Key]:[API Secret] \
  -d message_id=[Message ID]
curl https://api.transmitsms.com/get-sms-stats.json \
  -u [API Key]:[API Secret] \
  -d message_id=[Message ID]
curl https://api.transmitsms.com/format-number.json \
  -u [API Key]:[API Secret] \
  -d 'msisdn=[Phone Number]' \
  -d 'countrycode=[Country Acronym]'
curl https://api.transmitsms.com/lease-number.json \
  -u [API Key]:[API Secret] \
  -d number=[Phone Number] \
  -d 'forward_url=[Full Website URL]'
curl https://api.transmitsms.com/optout-list-member.json \
  -u [API Key]:[API Secret] \
  -d 'list_id=[List ID 1], [List ID 2]' \
  -d msisdn=[Phone Number]
curl https://api.transmitsms.com/add-list.json \
  -u [API Key]:[API Secret] \
  -d name=[List Name] \
  -d field_1=[Field 1] \
  -d field_2=[Field 2]
curl https://api.transmitsms.com/remove-list.json \
  -u [API Key]:[API Secret] \
  -d list_id=[List Number]

Popular Snippets

Send and receive SMS from the application of your choice with our flexible API suite. Use callbacks to receive inbound messages along with delivery reports. Create lists, lease numbers, set-up keywords, and schedule messages with ease.

Client Downloads

Product Highlights

  • Integrations
    Integrations

    Integrations

    Our SMS API is designed to easily integrate into any communication process. Plug in our API, by following our step-by-step documentation. If you get stuck, then submit a ticket or send us a live chat message.

    Learn More
  • Security
    Security

    Security

    To ensure total security and privacy, the SMS API only works over an HTTPS protocol for all requests. All API requests require your API credentials, you will find them once logged into your Account on the API settings page.

    Free Trial
  • Call Backs
    Call Backs

    Call Backs

    The best way to get immediate notification on the events like SMS delivery or incoming messages is to set up callback URLs. We will call this URL immediately after the event occurs and, if the call was unsuccessful, we will retry a few times later.

    Free Trial
  • DLR’s
    DLR’s

    DLR’s

    DLR's are Delivery Level Receipts, which are notifications received from carriers relating to the success or attempted SMS Delivery. Rather than having to poll for a message status, we will deliver DLR’s to your call back URL when we get them.

    Free Trial
  • Virtual Numbers
    Virtual Numbers

    Virtual Numbers

    Numbers are the Caller ID, or from field that your messages will come from. Although not mandatory for SMS API use, we recommend users to lease their own Dedicated Virtual Number to send and receive messages through the API.

    Free Trial
  • Throttle Limits
    Throttle Limits

    Throttle Limits

    To provide the best service to all our customers, we limit the number of SMS API calls which can be made by each account to 2 calls per sec. For heavy users we can increase your throttling speed. Contact us to discuss your requirements.

    Free Trial

Popular Integrations

Access 1,500+ integrations through Zapier, or try our direct options. Popular direct apps include: Keap, Marketo, Oracle Eloqua, Zoho, and Zendesk. Zapier integrations include: BitBucket, Facebook, GitHub, Mongo DB, MySQL, Salesforce, and many more.

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SMS Integrations

SMS Integrations

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Zapier SMS

  • SMS Integrations

    SMS Integrations

  • Security and Idenfication

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  • Zapier SMS

    Zapier SMS

Free Trial Available

Ready to take advantage of all the benefits SMS has to offer for your business?
Get started today with a 14 day free trial, and see how easy it is. You won’t even need to punch in your credit card.

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