I'm using Marketing Cloud Rest API and I have already created emails. How can I send one email to just one receiver via the API? Is it possible? I read the documentation about messageDefinitionSends and can't find a method for this action.

1 Answer 1


The documentation article you posted is the correct one for the desired task. You need to create a triggered send definition before you can use this call however. This can be done using Email Studio for example.

1. Creating a triggered email in Email Studio roughly works like this:

  1. Go to Email Studio -> Interactions -> Messages -> Email -> Triggered Sends -> Create
  2. Create Triggered Send
  3. Complete Properties-form (here you select your external key you need for the request)
  4. Select the created email to send
  5. Complete Subscribers management-form
  6. Set send options
  7. Save

Additional and detailed information on the various options can be found in the Create a Triggered Email Message Interaction documentation article.

2. Send a POST-request to the API

Use [restendpoint]/messaging/v1/messageDefinitionSends/key:[external key of your triggered send]/send using your instance's endpoint and the external key of your triggered send definition defined earlier.

The body of your request could look like this:

    "From": {
        "Address": "[email protected]",
        "Name": "Your Company"
    "To": {
        "Address": "[email protected]",
        "SubscriberKey": "SUBSCRIBERS_KEY"
    "OPTIONS": {
      "RequestType": "SYNC"

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