diff --git a/packages/destination-actions/src/destinations/epsilon/__tests__/index.test.ts b/packages/destination-actions/src/destinations/epsilon/__tests__/index.test.ts
new file mode 100644
index 0000000000..be1021c966
--- /dev/null
+++ b/packages/destination-actions/src/destinations/epsilon/__tests__/index.test.ts
@@ -0,0 +1,20 @@
+import nock from 'nock'
+import { createTestEvent, createTestIntegration } from '@segment/actions-core'
+import Definition from '../index'
+
+const testDestination = createTestIntegration(Definition)
+
+describe('Epsilon', () => {
+  describe('testAuthentication', () => {
+    it('should validate authentication inputs', async () => {
+      nock('https://your.destination.endpoint').get('*').reply(200, {})
+
+      const settings = {
+        username: '<test username>',
+        password: '<test password>'
+      }
+
+      await expect(testDestination.testAuthentication(settings)).resolves.not.toThrowError()
+    })
+  })
+})
diff --git a/packages/destination-actions/src/destinations/epsilon/__tests__/snapshot.test.ts b/packages/destination-actions/src/destinations/epsilon/__tests__/snapshot.test.ts
new file mode 100644
index 0000000000..605d973009
--- /dev/null
+++ b/packages/destination-actions/src/destinations/epsilon/__tests__/snapshot.test.ts
@@ -0,0 +1,77 @@
+import { createTestEvent, createTestIntegration } from '@segment/actions-core'
+import { generateTestData } from '../../../lib/test-data'
+import destination from '../index'
+import nock from 'nock'
+
+const testDestination = createTestIntegration(destination)
+const destinationSlug = 'actions-epsilon'
+
+describe(`Testing snapshot for ${destinationSlug} destination:`, () => {
+  for (const actionSlug in destination.actions) {
+    it(`${actionSlug} action - required fields`, async () => {
+      const seedName = `${destinationSlug}#${actionSlug}`
+      const action = destination.actions[actionSlug]
+      const [eventData, settingsData] = generateTestData(seedName, destination, action, true)
+
+      nock(/.*/).persist().get(/.*/).reply(200)
+      nock(/.*/).persist().post(/.*/).reply(200)
+      nock(/.*/).persist().put(/.*/).reply(200)
+
+      const event = createTestEvent({
+        properties: eventData
+      })
+
+      const responses = await testDestination.testAction(actionSlug, {
+        event: event,
+        mapping: event.properties,
+        settings: settingsData,
+        auth: undefined
+      })
+
+      const request = responses[0].request
+      const rawBody = await request.text()
+
+      try {
+        const json = JSON.parse(rawBody)
+        expect(json).toMatchSnapshot()
+        return
+      } catch (err) {
+        expect(rawBody).toMatchSnapshot()
+      }
+
+      expect(request.headers).toMatchSnapshot()
+    })
+
+    it(`${actionSlug} action - all fields`, async () => {
+      const seedName = `${destinationSlug}#${actionSlug}`
+      const action = destination.actions[actionSlug]
+      const [eventData, settingsData] = generateTestData(seedName, destination, action, false)
+
+      nock(/.*/).persist().get(/.*/).reply(200)
+      nock(/.*/).persist().post(/.*/).reply(200)
+      nock(/.*/).persist().put(/.*/).reply(200)
+
+      const event = createTestEvent({
+        properties: eventData
+      })
+
+      const responses = await testDestination.testAction(actionSlug, {
+        event: event,
+        mapping: event.properties,
+        settings: settingsData,
+        auth: undefined
+      })
+
+      const request = responses[0].request
+      const rawBody = await request.text()
+
+      try {
+        const json = JSON.parse(rawBody)
+        expect(json).toMatchSnapshot()
+        return
+      } catch (err) {
+        expect(rawBody).toMatchSnapshot()
+      }
+    })
+  }
+})
diff --git a/packages/destination-actions/src/destinations/epsilon/appOpen/__tests__/index.test.ts b/packages/destination-actions/src/destinations/epsilon/appOpen/__tests__/index.test.ts
new file mode 100644
index 0000000000..a231de83e0
--- /dev/null
+++ b/packages/destination-actions/src/destinations/epsilon/appOpen/__tests__/index.test.ts
@@ -0,0 +1,9 @@
+import nock from 'nock'
+import { createTestEvent, createTestIntegration } from '@segment/actions-core'
+import Destination from '../../index'
+
+const testDestination = createTestIntegration(Destination)
+
+describe('Epsilon.send', () => {
+  // TODO: Test your action
+})
diff --git a/packages/destination-actions/src/destinations/epsilon/appOpen/__tests__/snapshot.test.ts b/packages/destination-actions/src/destinations/epsilon/appOpen/__tests__/snapshot.test.ts
new file mode 100644
index 0000000000..aae0ced2e7
--- /dev/null
+++ b/packages/destination-actions/src/destinations/epsilon/appOpen/__tests__/snapshot.test.ts
@@ -0,0 +1,75 @@
+import { createTestEvent, createTestIntegration } from '@segment/actions-core'
+import { generateTestData } from '../../../../lib/test-data'
+import destination from '../../index'
+import nock from 'nock'
+
+const testDestination = createTestIntegration(destination)
+const actionSlug = 'send'
+const destinationSlug = 'Epsilon'
+const seedName = `${destinationSlug}#${actionSlug}`
+
+describe(`Testing snapshot for ${destinationSlug}'s ${actionSlug} destination action:`, () => {
+  it('required fields', async () => {
+    const action = destination.actions[actionSlug]
+    const [eventData, settingsData] = generateTestData(seedName, destination, action, true)
+
+    nock(/.*/).persist().get(/.*/).reply(200)
+    nock(/.*/).persist().post(/.*/).reply(200)
+    nock(/.*/).persist().put(/.*/).reply(200)
+
+    const event = createTestEvent({
+      properties: eventData
+    })
+
+    const responses = await testDestination.testAction(actionSlug, {
+      event: event,
+      mapping: event.properties,
+      settings: settingsData,
+      auth: undefined
+    })
+
+    const request = responses[0].request
+    const rawBody = await request.text()
+
+    try {
+      const json = JSON.parse(rawBody)
+      expect(json).toMatchSnapshot()
+      return
+    } catch (err) {
+      expect(rawBody).toMatchSnapshot()
+    }
+
+    expect(request.headers).toMatchSnapshot()
+  })
+
+  it('all fields', async () => {
+    const action = destination.actions[actionSlug]
+    const [eventData, settingsData] = generateTestData(seedName, destination, action, false)
+
+    nock(/.*/).persist().get(/.*/).reply(200)
+    nock(/.*/).persist().post(/.*/).reply(200)
+    nock(/.*/).persist().put(/.*/).reply(200)
+
+    const event = createTestEvent({
+      properties: eventData
+    })
+
+    const responses = await testDestination.testAction(actionSlug, {
+      event: event,
+      mapping: event.properties,
+      settings: settingsData,
+      auth: undefined
+    })
+
+    const request = responses[0].request
+    const rawBody = await request.text()
+
+    try {
+      const json = JSON.parse(rawBody)
+      expect(json).toMatchSnapshot()
+      return
+    } catch (err) {
+      expect(rawBody).toMatchSnapshot()
+    }
+  })
+})
diff --git a/packages/destination-actions/src/destinations/epsilon/appOpen/generated-types.ts b/packages/destination-actions/src/destinations/epsilon/appOpen/generated-types.ts
new file mode 100644
index 0000000000..944d22b085
--- /dev/null
+++ b/packages/destination-actions/src/destinations/epsilon/appOpen/generated-types.ts
@@ -0,0 +1,3 @@
+// Generated file. DO NOT MODIFY IT BY HAND.
+
+export interface Payload {}
diff --git a/packages/destination-actions/src/destinations/epsilon/appOpen/index.ts b/packages/destination-actions/src/destinations/epsilon/appOpen/index.ts
new file mode 100644
index 0000000000..d027aba3c3
--- /dev/null
+++ b/packages/destination-actions/src/destinations/epsilon/appOpen/index.ts
@@ -0,0 +1,24 @@
+import type { ActionDefinition } from '@segment/actions-core'
+import type { Settings } from '../generated-types'
+import type { Payload } from './generated-types'
+import { cachebuster, formId, identifiers } from '../fields'
+
+const action: ActionDefinition<Settings, Payload> = {
+  title: 'App Open',
+  description: 'Sync an App Open events to Epsilon',
+  defaultSubscription: 'type = "track" and event = "Application Opened"',
+  fields: {
+    cachebuster,
+    formId,
+    identifiers
+  },
+  perform: (request, data) => {
+    // Make your partner api request here!
+    // return request('https://example.com', {
+    //   method: 'post',
+    //   json: data.payload
+    // })
+  }
+}
+
+export default action
diff --git a/packages/destination-actions/src/destinations/epsilon/fields.ts b/packages/destination-actions/src/destinations/epsilon/fields.ts
new file mode 100644
index 0000000000..1dff616a2d
--- /dev/null
+++ b/packages/destination-actions/src/destinations/epsilon/fields.ts
@@ -0,0 +1,70 @@
+import { InputField } from '@segment/actions-core/destination-kit/types'
+
+export const eventName: InputField = {
+  label: 'Event Name',
+  description: 'The name of the event to send to Epsilon.',
+  type: 'string',
+  required: true,
+  default: {
+    '@path': '$.event'
+  }
+}
+
+export const formId: InputField = {
+  label: 'Form ID',
+  description: 'Form ID used in Epsilon’s system to identify app visits vs. conversions.',
+  type: 'string',
+  required: true
+} 
+
+export const identifiers: InputField = {
+  label: 'Identifiers',
+  description: 'Unique identifiers for the user.',
+  type: 'object',
+  required: true,
+  properties: {
+    emailHash: {
+      label: 'Email address',
+      description: 'Accepts hashed or unhashed emails. Segment will ensure that a non hashed email is hashed before being sent to Epsilon',
+      type: 'string',
+      default: {
+        '@if': {
+          exists: { '@path': '$.context.traits.email' },
+          then: { '@path': '$.context.traits.email' },
+          else: { '@path': '$.properties.email' }
+        }
+      }
+    },
+    userAgent: {
+      label: 'User Agent',
+      description: 'User agent of the mobile device.',
+      type: 'string',
+      default: { '@path': '$.context.userAgent' }
+    },
+    userIp: {
+      label: 'IP Address',
+      description: 'IP address of the user.',
+      type: 'string',
+      default: { '@path': '$.context.ip' }
+    },
+    userId: {
+      label: 'User ID',
+      description: 'Unique identifier for the user.',
+      type: 'string',
+      default: { '@path': '$.userId' }
+    },
+    dvcid: {
+      label: 'Device ID',
+      description: 'Unique identifier for the device.',
+      type: 'string',
+      default: { '@path': '$.context.device.id' }
+    }
+  }
+}
+
+export const cachebuster: InputField = {
+  label: 'Cache Buster',
+  description: 'Unique identifier for the message. Used for cache busting.',
+  type: 'string',
+  default: { '@path': '$.messageId' }
+}
\ No newline at end of file
diff --git a/packages/destination-actions/src/destinations/epsilon/generated-types.ts b/packages/destination-actions/src/destinations/epsilon/generated-types.ts
new file mode 100644
index 0000000000..2074a6bfca
--- /dev/null
+++ b/packages/destination-actions/src/destinations/epsilon/generated-types.ts
@@ -0,0 +1,12 @@
+// Generated file. DO NOT MODIFY IT BY HAND.
+
+export interface Settings {
+  /**
+   * Your Epsilon username
+   */
+  username: string
+  /**
+   * Your Epsilon password.
+   */
+  password: string
+}
diff --git a/packages/destination-actions/src/destinations/epsilon/index.ts b/packages/destination-actions/src/destinations/epsilon/index.ts
new file mode 100644
index 0000000000..6a22277495
--- /dev/null
+++ b/packages/destination-actions/src/destinations/epsilon/index.ts
@@ -0,0 +1,59 @@
+import type { DestinationDefinition } from '@segment/actions-core'
+import type { Settings } from './generated-types'
+
+import send from './appOpen'
+
+const destination: DestinationDefinition<Settings> = {
+  name: 'Epsilon (Actions)',
+  slug: 'actions-epsilon',
+  mode: 'cloud',
+  description: 'Sync analytics events and user profile details to Epsilon',
+
+  authentication: {
+    scheme: 'basic',
+    fields: {
+      username: {
+        label: 'Username',
+        description: 'Your Epsilon username',
+        type: 'string',
+        required: true
+      },
+      password: {
+        label: 'password',
+        description: 'Your Epsilon password.',
+        type: 'string',
+        required: true
+      },
+      companyId: {
+        label: 'Company ID',
+        description: 'Your Company ID. Contact Epsilon support for assistance.',
+        type: 'number',
+        required: true
+      },
+    },
+    testAuthentication: (request) => {
+      // Return a request that tests/validates the user's credentials.
+      // If you do not have a way to validate the authentication fields safely,
+      // you can remove the `testAuthentication` function, though discouraged.
+    }
+  },
+
+  extendRequest({ settings }) {
+    return {
+      username: settings.username,
+      password: settings.password
+    }
+  },
+
+  onDelete: async (request, { settings, payload }) => {
+    // Return a request that performs a GDPR delete for the provided Segment userId or anonymousId
+    // provided in the payload. If your destination does not support GDPR deletion you should not
+    // implement this function and should remove it completely.
+  },
+
+  actions: {
+    send
+  }
+}
+
+export default destination