diff --git a/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.component.js b/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.component.js
index e7f99f6f3b36..18cefa0e724b 100644
--- a/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.component.js
+++ b/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.component.js
@@ -178,6 +178,7 @@ export default class ConfirmTransactionBase extends Component {
     smartTransactionsOptInStatus: PropTypes.bool,
     currentChainSupportsSmartTransactions: PropTypes.bool,
     selectedNetworkClientId: PropTypes.string,
+    isSmartTransactionsEnabled: PropTypes.bool,
   };
 
   state = {
@@ -825,6 +826,7 @@ export default class ConfirmTransactionBase extends Component {
       toAddress,
       showCustodianDeepLink,
       clearConfirmTransaction,
+      isSmartTransactionsEnabled,
     } = this.props;
     const { noteText } = this.state;
 
@@ -836,6 +838,10 @@ export default class ConfirmTransactionBase extends Component {
         txData.metadata.note = noteText;
       }
 
+      if (isSmartTransactionsEnabled) {
+        txData.origin += '#smartTransaction';
+      }
+
       txData.metadata.custodianPublishesTransaction =
         custodianPublishesTransaction;
       txData.metadata.rpcUrl = rpcUrl;
diff --git a/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.container.js b/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.container.js
index 3734b231dad5..00cbdeefa01d 100644
--- a/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.container.js
+++ b/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.container.js
@@ -58,6 +58,9 @@ import {
 import {
   getCurrentChainSupportsSmartTransactions,
   getSmartTransactionsOptInStatus,
+  ///: BEGIN:ONLY_INCLUDE_IF(build-mmi)
+  getSmartTransactionsEnabled,
+  ///: END:ONLY_INCLUDE_IF
 } from '../../../../shared/modules/selectors';
 import { getMostRecentOverviewPage } from '../../../ducks/history/history';
 import {
@@ -345,6 +348,7 @@ const mapStateToProps = (state, ownProps) => {
     isNotification,
     custodianPublishesTransaction,
     rpcUrl,
+    isSmartTransactionsEnabled: getSmartTransactionsEnabled(state),
     ///: END:ONLY_INCLUDE_IF
   };
 };
diff --git a/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.test.js b/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.test.js
index 5cf90c0da6cb..bc36b2667576 100644
--- a/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.test.js
+++ b/ui/pages/confirmations/confirm-transaction-base/confirm-transaction-base.test.js
@@ -45,9 +45,9 @@ setBackgroundConnection({
     }),
   ),
   getGasFeeTimeEstimate: jest.fn(),
-  promisifiedBackground: jest.fn(),
   tryReverseResolveAddress: jest.fn(),
   getNextNonce: jest.fn(),
+  updateTransaction: jest.fn(),
 });
 
 const mockTxParamsFromAddress = '0x123456789';
@@ -470,14 +470,12 @@ describe('Confirm Transaction Base', () => {
     const sendTransaction = jest
       .fn()
       .mockResolvedValue(state.confirmTransaction.txData);
-    const updateTransaction = jest.fn().mockResolvedValue();
     const updateTransactionValue = jest.fn().mockResolvedValue();
     const showCustodianDeepLink = jest.fn();
     const setWaitForConfirmDeepLinkDialog = jest.fn();
 
     const props = {
       sendTransaction,
-      updateTransaction,
       updateTransactionValue,
       showCustodianDeepLink,
       setWaitForConfirmDeepLinkDialog,
@@ -497,12 +495,19 @@ describe('Confirm Transaction Base', () => {
     expect(sendTransaction).toHaveBeenCalled();
   });
 
-  it('handleMainSubmit calls sendTransaction correctly', async () => {
+  it('handleMMISubmit calls sendTransaction correctly and then showCustodianDeepLink', async () => {
     const state = {
       appState: {
         ...baseStore.appState,
         gasLoadingAnimationIsShowing: false,
       },
+      confirmTransaction: {
+        ...baseStore.confirmTransaction,
+        txData: {
+          ...baseStore.confirmTransaction.txData,
+          custodyStatus: true,
+        },
+      },
       metamask: {
         ...baseStore.metamask,
         accounts: {
@@ -516,7 +521,9 @@ describe('Confirm Transaction Base', () => {
         networksMetadata: {
           ...baseStore.metamask.networksMetadata,
           [NetworkType.mainnet]: {
-            EIPS: { 1559: true },
+            EIPS: {
+              1559: true,
+            },
             status: NetworkStatus.Available,
           },
         },
@@ -525,6 +532,47 @@ describe('Confirm Transaction Base', () => {
           gasPrice: '0x59682f00',
         },
         noGasPrice: false,
+        keyrings: [
+          {
+            type: 'Custody',
+            accounts: [mockTxParamsFromAddress],
+          },
+        ],
+        custodyAccountDetails: {
+          [mockTxParamsFromAddress]: {
+            address: mockTxParamsFromAddress,
+            details: 'details',
+            custodyType: 'testCustody - Saturn',
+            custodianName: 'saturn-dev',
+          },
+        },
+        mmiConfiguration: {
+          custodians: [
+            {
+              envName: 'saturn-dev',
+              displayName: 'Saturn Custody',
+              isNoteToTraderSupported: false,
+            },
+          ],
+        },
+        internalAccounts: {
+          accounts: {
+            'cf8dace4-9439-4bd4-b3a8-88c821c8fcb3': {
+              address: mockTxParamsFromAddress,
+              id: 'cf8dace4-9439-4bd4-b3a8-88c821c8fcb3',
+              metadata: {
+                name: 'Custody Account A',
+                keyring: {
+                  type: 'Custody',
+                },
+              },
+              options: {},
+              methods: ETH_EOA_METHODS,
+              type: EthAccountType.Eoa,
+            },
+          },
+          selectedAccount: 'cf8dace4-9439-4bd4-b3a8-88c821c8fcb3',
+        },
       },
       send: {
         ...baseStore.send,
@@ -546,12 +594,19 @@ describe('Confirm Transaction Base', () => {
       },
     };
 
-    const sendTransaction = jest.fn().mockResolvedValue();
+    const sendTransaction = jest
+      .fn()
+      .mockResolvedValue(state.confirmTransaction.txData);
+    const showCustodianDeepLink = jest.fn();
+    const setWaitForConfirmDeepLinkDialog = jest.fn();
 
     const props = {
       sendTransaction,
+      showCustodianDeepLink,
+      setWaitForConfirmDeepLinkDialog,
       toAddress: mockPropsToAddress,
       toAccounts: [{ address: mockPropsToAddress }],
+      isMainBetaFlask: false,
     };
 
     const { getByTestId } = await render({ props, state });
@@ -560,10 +615,12 @@ describe('Confirm Transaction Base', () => {
     await act(async () => {
       fireEvent.click(confirmButton);
     });
-    expect(sendTransaction).toHaveBeenCalled();
+    expect(setWaitForConfirmDeepLinkDialog).toHaveBeenCalled();
+    await expect(sendTransaction).toHaveBeenCalled();
+    expect(showCustodianDeepLink).toHaveBeenCalled();
   });
 
-  it('handleMMISubmit calls sendTransaction correctly and then showCustodianDeepLink', async () => {
+  it('should append #smartTransaction to txData.origin when smartTransactionsOptInStatus and currentChainSupportsSmartTransactions are true', async () => {
     const state = {
       appState: {
         ...baseStore.appState,
@@ -574,6 +631,7 @@ describe('Confirm Transaction Base', () => {
         txData: {
           ...baseStore.confirmTransaction.txData,
           custodyStatus: true,
+          origin: 'metamask#smartTransaction',
         },
       },
       metamask: {
@@ -600,6 +658,47 @@ describe('Confirm Transaction Base', () => {
           gasPrice: '0x59682f00',
         },
         noGasPrice: false,
+        keyrings: [
+          {
+            type: 'Custody',
+            accounts: [mockTxParamsFromAddress],
+          },
+        ],
+        custodyAccountDetails: {
+          [mockTxParamsFromAddress]: {
+            address: mockTxParamsFromAddress,
+            details: 'details',
+            custodyType: 'testCustody - Saturn',
+            custodianName: 'saturn-dev',
+          },
+        },
+        mmiConfiguration: {
+          custodians: [
+            {
+              envName: 'saturn-dev',
+              displayName: 'Saturn Custody',
+              isNoteToTraderSupported: false,
+            },
+          ],
+        },
+        internalAccounts: {
+          accounts: {
+            'cf8dace4-9439-4bd4-b3a8-88c821c8fcb3': {
+              address: mockTxParamsFromAddress,
+              id: 'cf8dace4-9439-4bd4-b3a8-88c821c8fcb3',
+              metadata: {
+                name: 'Custody Account A',
+                keyring: {
+                  type: 'Custody',
+                },
+              },
+              options: {},
+              methods: ETH_EOA_METHODS,
+              type: EthAccountType.Eoa,
+            },
+          },
+          selectedAccount: 'cf8dace4-9439-4bd4-b3a8-88c821c8fcb3',
+        },
       },
       send: {
         ...baseStore.send,
@@ -642,9 +741,12 @@ describe('Confirm Transaction Base', () => {
     await act(async () => {
       fireEvent.click(confirmButton);
     });
-    expect(setWaitForConfirmDeepLinkDialog).toHaveBeenCalled();
-    await expect(sendTransaction).toHaveBeenCalled();
-    expect(showCustodianDeepLink).toHaveBeenCalled();
+
+    expect(sendTransaction).toHaveBeenCalledWith(
+      expect.objectContaining({
+        origin: 'metamask#smartTransaction',
+      }),
+    );
   });
 
   describe('when rendering the recipient value', () => {