diff --git a/README.md b/README.md
index b438fda..248ee0a 100644
--- a/README.md
+++ b/README.md
@@ -302,6 +302,56 @@ rescue Customerio::InvalidResponse => e
 end
 ```
 
+### Trigger Broadcasts
+
+To use the Customer.io [Trigger Broadcast API](https://www.customer.io/docs/api/app/#operation/triggerBroadcast), create an instance of the API client using an [app key](https://customer.io/docs/managing-credentials#app-api-keys).
+
+Create a new `TriggerBroadcastRequest` object containing:
+
+* `broadcast_id`: the ID of the broadcast you want to trigger.
+
+Optionally, add a `payload` object with any of the following:
+* one of the audience options to override the default audience: `recipients | emails | ids | per_user_data | data_file_url`.
+* `data`: an object containing information you want to use to populate your broadcast.
+* `email_add_duplicates`: a boolean indicating if an email address associated with more than one profile id is an error (default: false).
+* `email_ignore_missing`: if false, a missing email address is an error (default: false).
+* `id_ignore_missing`: if false, a missing customer ID is an error (default: false).
+
+Use `trigger_broadcast` referencing your request to trigger the broadcast. [Learn more about triggering broadcasts and `TriggerBroadcastRequest` properties](https://customer.io/docs/api-triggered-broadcasts/).
+
+```ruby
+require "customerio"
+
+client = Customerio::APIClient.new("your API key", region: Customerio::Regions::US)
+
+payload = {
+  emails: [
+    "recipient1@example.com",
+    "anotherRecipient@example.com"
+  ],
+  data: {
+    headline: "Roadrunner spotted in Albuquerque!",
+    date: 1511315635,
+    text: "We received reports of a roadrunner in your immediate area! Head to your dashboard to view more information!"
+  },
+  email_add_duplicates: false,
+  email_ignore_missing: false,
+  id_ignore_missing: false
+}
+
+request = Customerio::TriggerBroadcastRequest.new(
+  broadcast_id: 12345,
+  payload: payload
+)
+
+begin
+  response = client.trigger_broadcast(request)
+  puts response
+rescue Customerio::InvalidResponse => e
+  puts e.code, e.message
+end
+```
+
 ## Contributing
 
 1. Fork it
diff --git a/lib/customerio.rb b/lib/customerio.rb
index e824c5b..0982bd9 100644
--- a/lib/customerio.rb
+++ b/lib/customerio.rb
@@ -6,6 +6,7 @@ module Customerio
   require "customerio/client"
   require "customerio/requests/send_email_request"
   require "customerio/requests/send_push_request"
+  require "customerio/requests/trigger_broadcast_request"
   require "customerio/api"
   require "customerio/param_encoder"
 end
diff --git a/lib/customerio/api.rb b/lib/customerio/api.rb
index 97394b1..6f7bcd6 100644
--- a/lib/customerio/api.rb
+++ b/lib/customerio/api.rb
@@ -41,6 +41,24 @@ def send_push(req)
       end
     end
 
+    def trigger_broadcast(req)
+      unless req.is_a?(Customerio::TriggerBroadcastRequest)
+        raise 'request must be an instance of Customerio::TriggerBroadcastRequest'
+      end
+
+      response = @client.request(:post, trigger_broadcast_path(req.broadcast_id), req.payload)
+
+      case response
+      when Net::HTTPSuccess
+        JSON.parse(response.body)
+      when Net::HTTPBadRequest
+        json = JSON.parse(response.body)
+        raise Customerio::InvalidResponse.new(response.code, json['meta']['error'], response)
+      else
+        raise InvalidResponse.new(response.code, response.body)
+      end
+    end
+
     private
 
     def send_email_path
@@ -50,5 +68,9 @@ def send_email_path
     def send_push_path
       "/v1/send/push"
     end
+
+    def trigger_broadcast_path(broadcast_id)
+      "/v1/campaigns/#{broadcast_id}/triggers"
+    end
   end
 end
diff --git a/lib/customerio/requests/trigger_broadcast_request.rb b/lib/customerio/requests/trigger_broadcast_request.rb
new file mode 100644
index 0000000..c7699f4
--- /dev/null
+++ b/lib/customerio/requests/trigger_broadcast_request.rb
@@ -0,0 +1,41 @@
+module Customerio
+  class TriggerBroadcastRequest
+    attr_reader :broadcast_id, :payload
+
+    def initialize(broadcast_id:, payload:{})
+      @broadcast_id = broadcast_id
+      @payload = payload.delete_if { |field| invalid_field?(field) }
+
+      validate_broadcast_id
+      validate_xor_recipients
+    end
+
+    private
+
+    OPTIONAL_FIELDS = [:data, :email_add_duplicates, :email_ignore_missing, :id_ignore_missing].freeze
+
+    # we're not validating the structure, just that only one is present
+    ONLY_ONE_ALLOWED = [
+      :recipients,
+      :emails,
+      :ids,
+      :per_user_data,
+      :data_file_url
+    ].freeze
+
+    def invalid_field?(field)
+      !OPTIONAL_FIELDS.include?(field) && !ONLY_ONE_ALLOWED.include?(field)
+    end
+
+    def validate_broadcast_id
+      raise 'broadcast id is required' unless broadcast_id
+      raise 'broadcast id must be an integer' unless broadcast_id.is_a?(Integer)
+    end
+
+    def validate_xor_recipients
+      present = ONLY_ONE_ALLOWED.select { |field| payload.key?(field) }
+
+      raise "Only one of #{arr.join(', ')} can be present" if present.length > 1
+    end
+  end
+end
diff --git a/spec/api_client_spec.rb b/spec/api_client_spec.rb
index fac44ab..6b78538 100644
--- a/spec/api_client_spec.rb
+++ b/spec/api_client_spec.rb
@@ -252,4 +252,113 @@ def json(data)
       client.send_push(req).should eq({ "delivery_id" => 2 })
     end
   end
+
+  describe '#trigger_broadcast' do
+    it "sends a POST request to the customer.io's broadcast API" do
+      payload = {
+        data: { name: 'foo' },
+        recipients: {
+          segment: { id: 7 }
+        }
+      }
+      req = Customerio::TriggerBroadcastRequest.new(broadcast_id: 1, payload: payload)
+
+      stub_request(:post, api_uri('/v1/campaigns/1/triggers'))
+        .with(headers: request_headers, body: req.payload)
+        .to_return(status: 200, body: { delivery_id: 1 }.to_json, headers: {})
+
+      expect(client.trigger_broadcast(req)).to eq({ 'delivery_id' => 1 })
+    end
+
+    it "handles validation failures (400)" do
+      payload = {
+        data: { name: 'foo' },
+        emails: ['foo', 'bar'],
+        email_ignore_missing: true,
+        email_add_duplicates: true
+      }
+      req = Customerio::TriggerBroadcastRequest.new(broadcast_id: 1, payload: payload)
+
+      err_json = { meta: { error: "example error" } }.to_json
+
+      stub_request(:post, api_uri('/v1/campaigns/1/triggers'))
+        .with(headers: request_headers, body: req.payload)
+        .to_return(status: 400, body: err_json, headers: {})
+
+      lambda { client.trigger_broadcast(req) }.should(
+        raise_error(Customerio::InvalidResponse) { |error|
+          error.message.should eq "example error"
+          error.code.should eq "400"
+        }
+      )
+    end
+
+    it "handles other failures (5xx)" do
+      payload = {
+        data: { name: 'foo' },
+        emails: ['foo', 'bar'],
+        email_ignore_missing: true,
+        email_add_duplicates: true
+      }
+      req = Customerio::TriggerBroadcastRequest.new(broadcast_id: 1, payload: payload)
+
+      stub_request(:post, api_uri('/v1/campaigns/1/triggers'))
+        .with(headers: request_headers, body: req.payload)
+        .to_return(status: 500, body: "Server unavailable", headers: {})
+
+      lambda { client.trigger_broadcast(req) }.should(
+        raise_error(Customerio::InvalidResponse) { |error|
+          error.message.should eq "Server unavailable"
+          error.code.should eq "500"
+        }
+      )
+    end
+
+    it 'supports campaign triggers based on email fields' do
+      payload = {
+        data: { name: 'foo' },
+        emails: ['foo', 'bar'],
+        email_ignore_missing: true,
+        email_add_duplicates: true
+      }
+      req = Customerio::TriggerBroadcastRequest.new(broadcast_id: 1, payload: payload)
+
+      stub_request(:post, api_uri('/v1/campaigns/1/triggers'))
+        .with(headers: request_headers, body: req.payload)
+        .to_return(status: 200, body: { delivery_id: 1 }.to_json, headers: {})
+
+
+      expect(client.trigger_broadcast(req)).to eq({ 'delivery_id' => 1 })
+    end
+
+    it 'supports campaign triggers based on id fields' do
+      payload = {
+        data: { name: 'foo' },
+        ids: [1, 2, 3],
+        id_ignore_missing: true
+      }
+      req = Customerio::TriggerBroadcastRequest.new(broadcast_id: 1, payload: payload)
+
+      stub_request(:post, api_uri('/v1/campaigns/1/triggers'))
+        .with(headers: request_headers, body: req.payload)
+        .to_return(status: 200, body: { delivery_id: 1 }.to_json, headers: {})
+
+      expect(client.trigger_broadcast(req)).to eq({ 'delivery_id' => 1 })
+    end
+
+    it 'supports campaign triggers based on per user data' do
+      user_data = { id: 1, data: { name: 'foo' } }
+      payload = {
+        data: { name: 'foo' },
+        per_user_data: [user_data]
+      }
+      req = Customerio::TriggerBroadcastRequest.new(broadcast_id: 1, payload: payload)
+
+      stub_request(:post, api_uri('/v1/campaigns/1/triggers'))
+        .with(headers: request_headers, body: req.payload)
+        .to_return(status: 200, body: { delivery_id: 1 }.to_json, headers: {})
+
+      expect(client.trigger_broadcast(req)).to eq({ 'delivery_id' => 1 })
+    end
+  end
 end