Prevent send to token warning (#6058)

20 files changed, 242 insertions, 11 deletions

diff --git a/ui/app/actions.js b/ui/app/actions.js
index 29cf4b2f2..c2622d0a0 100644
--- a/ui/app/actions.js
+++ b/ui/app/actions.js
@@ -191,6 +191,7 @@ var actions = {
   UPDATE_SEND_AMOUNT: 'UPDATE_SEND_AMOUNT',
   UPDATE_SEND_MEMO: 'UPDATE_SEND_MEMO',
   UPDATE_SEND_ERRORS: 'UPDATE_SEND_ERRORS',
+  UPDATE_SEND_WARNINGS: 'UPDATE_SEND_WARNINGS',
   UPDATE_MAX_MODE: 'UPDATE_MAX_MODE',
   UPDATE_SEND: 'UPDATE_SEND',
   CLEAR_SEND: 'CLEAR_SEND',
@@ -211,6 +212,7 @@ var actions = {
   setMaxModeTo,
   updateSend,
   updateSendErrors,
+  updateSendWarnings,
   clearSend,
   setSelectedAddress,
   gasLoadingStarted,
@@ -1068,6 +1070,13 @@ function updateSendErrors (errorObject) {
   }
 }
 
+function updateSendWarnings (warningObject) {
+  return {
+    type: actions.UPDATE_SEND_WARNINGS,
+    value: warningObject,
+  }
+}
+
 function setSendTokenBalance (tokenBalance) {
   return {
     type: actions.UPDATE_SEND_TOKEN_BALANCE,
diff --git a/ui/app/components/ens-input.js b/ui/app/components/ens-input.js
index f538fd555..a9167e3b2 100644
--- a/ui/app/components/ens-input.js
+++ b/ui/app/components/ens-input.js
@@ -128,7 +128,7 @@ EnsInput.prototype.componentDidUpdate = function (prevProps, prevState) {
   }
   if (prevState && ensResolution && this.props.onChange &&
       ensResolution !== prevState.ensResolution) {
-    this.props.onChange({ toAddress: ensResolution, nickname, toError: state.toError })
+    this.props.onChange({ toAddress: ensResolution, nickname, toError: state.toError, toWarning: state.toWarning })
   }
 }
 
diff --git a/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/index.js b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/index.js
new file mode 100644
index 000000000..fd4d19ef7
--- /dev/null
+++ b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/index.js
@@ -0,0 +1 @@
+export { default } from './send-row-warning-message.container'
diff --git a/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/send-row-warning-message.component.js b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/send-row-warning-message.component.js
new file mode 100644
index 000000000..f1caa8f99
--- /dev/null
+++ b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/send-row-warning-message.component.js
@@ -0,0 +1,27 @@
+import React, { Component } from 'react'
+import PropTypes from 'prop-types'
+
+export default class SendRowWarningMessage extends Component {
+
+  static propTypes = {
+    warnings: PropTypes.object,
+    warningType: PropTypes.string,
+  };
+
+  static contextTypes = {
+    t: PropTypes.func,
+  };
+
+  render () {
+    const { warnings, warningType } = this.props
+
+    const warningMessage = warningType in warnings && warnings[warningType]
+
+    return (
+        warningMessage
+        ? <div className="send-v2__warning">{this.context.t(warningMessage)}</div>
+        : null
+    )
+  }
+
+}
diff --git a/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/send-row-warning-message.container.js b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/send-row-warning-message.container.js
new file mode 100644
index 000000000..7df14fd96
--- /dev/null
+++ b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/send-row-warning-message.container.js
@@ -0,0 +1,12 @@
+import { connect } from 'react-redux'
+import { getSendWarnings } from '../../../send.selectors'
+import SendRowWarningMessage from './send-row-warning-message.component'
+
+export default connect(mapStateToProps)(SendRowWarningMessage)
+
+function mapStateToProps (state, ownProps) {
+  return {
+    warnings: getSendWarnings(state),
+    warningType: ownProps.warningType,
+  }
+}
diff --git a/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/send-row-warning-message.scss b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/send-row-warning-message.scss
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/send-row-warning-message.scss
diff --git a/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/tests/send-row-warning-message-component.test.js b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/tests/send-row-warning-message-component.test.js
new file mode 100644
index 000000000..bd803d833
--- /dev/null
+++ b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/tests/send-row-warning-message-component.test.js
@@ -0,0 +1,28 @@
+import React from 'react'
+import assert from 'assert'
+import { shallow } from 'enzyme'
+import SendRowWarningMessage from '../send-row-warning-message.component.js'
+
+describe('SendRowWarningMessage Component', function () {
+  let wrapper
+
+  beforeEach(() => {
+    wrapper = shallow(<SendRowWarningMessage
+      warnings={{ warning1: 'abc', warning2: 'def' }}
+      warningType={'warning3'}
+    />, { context: { t: str => str + '_t' } })
+  })
+
+  describe('render', () => {
+    it('should render null if the passed warnings do not contain a warning of warningType', () => {
+      assert.equal(wrapper.find('.send-v2__warning').length, 0)
+      assert.equal(wrapper.html(), null)
+    })
+
+    it('should render a warning message if the passed warnings contain a warning of warningType', () => {
+      wrapper.setProps({ warnings: { warning1: 'abc', warning2: 'def', warning3: 'xyz' } })
+      assert.equal(wrapper.find('.send-v2__warning').length, 1)
+      assert.equal(wrapper.find('.send-v2__warning').text(), 'xyz_t')
+    })
+  })
+})
diff --git a/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/tests/send-row-warning-message-container.test.js b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/tests/send-row-warning-message-container.test.js
new file mode 100644
index 000000000..225bf056c
--- /dev/null
+++ b/ui/app/components/send/send-content/send-row-wrapper/send-row-warning-message/tests/send-row-warning-message-container.test.js
@@ -0,0 +1,28 @@
+import assert from 'assert'
+import proxyquire from 'proxyquire'
+
+let mapStateToProps
+
+proxyquire('../send-row-warning-message.container.js', {
+  'react-redux': {
+    connect: (ms, md) => {
+      mapStateToProps = ms
+      return () => ({})
+    },
+  },
+  '../../../send.selectors': { getSendWarnings: (s) => `mockWarnings:${s}` },
+})
+
+describe('send-row-warning-message container', () => {
+
+  describe('mapStateToProps()', () => {
+
+    it('should map the correct properties to props', () => {
+      assert.deepEqual(mapStateToProps('mockState', { warningType: 'someType' }), {
+        warnings: 'mockWarnings:mockState',
+        warningType: 'someType' })
+    })
+
+  })
+
+})
diff --git a/ui/app/components/send/send-content/send-row-wrapper/send-row-wrapper.component.js b/ui/app/components/send/send-content/send-row-wrapper/send-row-wrapper.component.js
index 04f4f8a15..0146ce645 100644
--- a/ui/app/components/send/send-content/send-row-wrapper/send-row-wrapper.component.js
+++ b/ui/app/components/send/send-content/send-row-wrapper/send-row-wrapper.component.js
@@ -1,6 +1,7 @@
 import React, { Component } from 'react'
 import PropTypes from 'prop-types'
 import SendRowErrorMessage from './send-row-error-message/'
+import SendRowWarningMessage from './send-row-warning-message/'
 
 export default class SendRowWrapper extends Component {
 
@@ -9,6 +10,8 @@ export default class SendRowWrapper extends Component {
     errorType: PropTypes.string,
     label: PropTypes.string,
     showError: PropTypes.bool,
+    showWarning: PropTypes.bool,
+    warningType: PropTypes.string,
   };
 
   static contextTypes = {
@@ -21,8 +24,9 @@ export default class SendRowWrapper extends Component {
       errorType = '',
       label,
       showError = false,
+      showWarning = false,
+      warningType = '',
     } = this.props
-
     const formField = Array.isArray(children) ? children[1] || children[0] : children
     const customLabelContent = children.length > 1 ? children[0] : null
 
@@ -31,6 +35,7 @@ export default class SendRowWrapper extends Component {
         <div className="send-v2__form-label">
           {label}
           {showError && <SendRowErrorMessage errorType={errorType}/>}
+          {!showError && showWarning && <SendRowWarningMessage warningType={warningType} />}
           {customLabelContent}
         </div>
         <div className="send-v2__form-field">
diff --git a/ui/app/components/send/send-content/send-to-row/send-to-row.component.js b/ui/app/components/send/send-content/send-to-row/send-to-row.component.js
index dbcc4ecd6..0f26dd55c 100644
--- a/ui/app/components/send/send-content/send-to-row/send-to-row.component.js
+++ b/ui/app/components/send/send-content/send-to-row/send-to-row.component.js
@@ -2,7 +2,7 @@ import React, { Component } from 'react'
 import PropTypes from 'prop-types'
 import SendRowWrapper from '../send-row-wrapper/'
 import EnsInput from '../../../ens-input'
-import { getToErrorObject } from './send-to-row.utils.js'
+import { getToErrorObject, getToWarningObject } from './send-to-row.utils.js'
 
 export default class SendToRow extends Component {
 
@@ -10,6 +10,7 @@ export default class SendToRow extends Component {
     closeToDropdown: PropTypes.func,
     hasHexData: PropTypes.bool.isRequired,
     inError: PropTypes.bool,
+    inWarning: PropTypes.bool,
     network: PropTypes.string,
     openToDropdown: PropTypes.func,
     selectedToken: PropTypes.object,
@@ -20,6 +21,7 @@ export default class SendToRow extends Component {
     updateGas: PropTypes.func,
     updateSendTo: PropTypes.func,
     updateSendToError: PropTypes.func,
+    updateSendToWarning: PropTypes.func,
     scanQrCode: PropTypes.func,
   }
 
@@ -27,11 +29,13 @@ export default class SendToRow extends Component {
     t: PropTypes.func,
   }
 
-  handleToChange (to, nickname = '', toError) {
-    const { hasHexData, updateSendTo, updateSendToError, updateGas, tokens, selectedToken } = this.props
-    const toErrorObject = getToErrorObject(to, toError, hasHexData, tokens, selectedToken)
+  handleToChange (to, nickname = '', toError, toWarning) {
+    const { hasHexData, updateSendTo, updateSendToError, updateGas, tokens, selectedToken, updateSendToWarning } = this.props
+    const toErrorObject = getToErrorObject(to, toError, hasHexData)
+    const toWarningObject = getToWarningObject(to, toWarning, tokens, selectedToken)
     updateSendTo(to, nickname)
     updateSendToError(toErrorObject)
+    updateSendToWarning(toWarningObject)
     if (toErrorObject.to === null) {
       updateGas({ to })
     }
@@ -41,6 +45,7 @@ export default class SendToRow extends Component {
     const {
       closeToDropdown,
       inError,
+      inWarning,
       network,
       openToDropdown,
       to,
@@ -53,7 +58,9 @@ export default class SendToRow extends Component {
         errorType={'to'}
         label={`${this.context.t('to')}: `}
         showError={inError}
-      >
+        showWarning={inWarning}
+        warningType={'to'}
+        >
         <EnsInput
           scanQrCode={_ => this.props.scanQrCode()}
           accounts={toAccounts}
@@ -62,7 +69,7 @@ export default class SendToRow extends Component {
           inError={inError}
           name={'address'}
           network={network}
-          onChange={({ toAddress, nickname, toError }) => this.handleToChange(toAddress, nickname, toError)}
+          onChange={({ toAddress, nickname, toError, toWarning }) => this.handleToChange(toAddress, nickname, toError, toWarning)}
           openDropdown={() => openToDropdown()}
           placeholder={this.context.t('recipientAddress')}
           to={to}
diff --git a/ui/app/components/send/send-content/send-to-row/send-to-row.container.js b/ui/app/components/send/send-content/send-to-row/send-to-row.container.js
index 945cdbaeb..fc6742df0 100644
--- a/ui/app/components/send/send-content/send-to-row/send-to-row.container.js
+++ b/ui/app/components/send/send-content/send-to-row/send-to-row.container.js
@@ -10,12 +10,14 @@ import {
     getToDropdownOpen,
     getTokens,
     sendToIsInError,
+    sendToIsInWarning,
 } from './send-to-row.selectors.js'
 import {
     updateSendTo,
 } from '../../../../actions'
 import {
   updateSendErrors,
+  updateSendWarnings,
   openToDropdown,
   closeToDropdown,
 } from '../../../../ducks/send.duck'
@@ -27,6 +29,7 @@ function mapStateToProps (state) {
   return {
     hasHexData: Boolean(getSendHexData(state)),
     inError: sendToIsInError(state),
+    inWarning: sendToIsInWarning(state),
     network: getCurrentNetwork(state),
     selectedToken: getSelectedToken(state),
     to: getSendTo(state),
@@ -44,5 +47,8 @@ function mapDispatchToProps (dispatch) {
     updateSendToError: (toErrorObject) => {
         dispatch(updateSendErrors(toErrorObject))
     },
+    updateSendToWarning: (toWarningObject) => {
+      dispatch(updateSendWarnings(toWarningObject))
+  },
   }
 }
diff --git a/ui/app/components/send/send-content/send-to-row/send-to-row.selectors.js b/ui/app/components/send/send-content/send-to-row/send-to-row.selectors.js
index 982fd2e46..a6160d335 100644
--- a/ui/app/components/send/send-content/send-to-row/send-to-row.selectors.js
+++ b/ui/app/components/send/send-content/send-to-row/send-to-row.selectors.js
@@ -2,6 +2,7 @@ const selectors = {
   getToDropdownOpen,
   getTokens,
   sendToIsInError,
+  sendToIsInWarning,
 }
 
 module.exports = selectors
@@ -14,6 +15,10 @@ function sendToIsInError (state) {
     return Boolean(state.send.errors.to)
 }
 
+function sendToIsInWarning (state) {
+  return Boolean(state.send.warnings.to)
+}
+
 function getTokens (state) {
   return state.metamask.tokens
 }
diff --git a/ui/app/components/send/send-content/send-to-row/send-to-row.utils.js b/ui/app/components/send/send-content/send-to-row/send-to-row.utils.js
index 7efd2a772..4a8add42e 100644
--- a/ui/app/components/send/send-content/send-to-row/send-to-row.utils.js
+++ b/ui/app/components/send/send-content/send-to-row/send-to-row.utils.js
@@ -19,10 +19,17 @@ function getToErrorObject (to, toError = null, hasHexData = false, tokens = [],
   } else if (selectedToken && (ethUtil.toChecksumAddress(to) in contractMap || checkExistingAddresses(to, tokens))) {
     toError = KNOWN_RECIPIENT_ADDRESS_ERROR
   }
-
   return { to: toError }
 }
 
+function getToWarningObject (to, toWarning = null, tokens = [], selectedToken = null) {
+  if (selectedToken && (ethUtil.toChecksumAddress(to) in contractMap || checkExistingAddresses(to, tokens))) {
+    toWarning = KNOWN_RECIPIENT_ADDRESS_ERROR
+  }
+  return { to: toWarning }
+}
+
 module.exports = {
   getToErrorObject,
+  getToWarningObject,
 }
diff --git a/ui/app/components/send/send-content/send-to-row/tests/send-to-row-component.test.js b/ui/app/components/send/send-content/send-to-row/tests/send-to-row-component.test.js
index 591229deb..d3732307f 100644
--- a/ui/app/components/send/send-content/send-to-row/tests/send-to-row-component.test.js
+++ b/ui/app/components/send/send-content/send-to-row/tests/send-to-row-component.test.js
@@ -9,6 +9,9 @@ const SendToRow = proxyquire('../send-to-row.component.js', {
     getToErrorObject: (to, toError) => ({
       to: to === false ? null : `mockToErrorObject:${to}${toError}`,
     }),
+    getToWarningObject: (to, toWarning) => ({
+      to: to === false ? null : `mockToWarningObject:${to}${toWarning}`,
+    }),
   },
 }).default
 
@@ -21,6 +24,7 @@ const propsMethodSpies = {
   updateGas: sinon.spy(),
   updateSendTo: sinon.spy(),
   updateSendToError: sinon.spy(),
+  updateSendToWarning: sinon.spy(),
 }
 
 sinon.spy(SendToRow.prototype, 'handleToChange')
@@ -33,6 +37,7 @@ describe('SendToRow Component', function () {
     wrapper = shallow(<SendToRow
       closeToDropdown={propsMethodSpies.closeToDropdown}
       inError={false}
+      inWarning={false}
       network={'mockNetwork'}
       openToDropdown={propsMethodSpies.openToDropdown}
       to={'mockTo'}
@@ -41,6 +46,7 @@ describe('SendToRow Component', function () {
       updateGas={propsMethodSpies.updateGas}
       updateSendTo={propsMethodSpies.updateSendTo}
       updateSendToError={propsMethodSpies.updateSendToError}
+      updateSendToWarning={propsMethodSpies.updateSendToWarning}
     />, { context: { t: str => str + '_t' } })
     instance = wrapper.instance()
   })
@@ -50,6 +56,7 @@ describe('SendToRow Component', function () {
     propsMethodSpies.openToDropdown.resetHistory()
     propsMethodSpies.updateSendTo.resetHistory()
     propsMethodSpies.updateSendToError.resetHistory()
+    propsMethodSpies.updateSendToWarning.resetHistory()
     SendToRow.prototype.handleToChange.resetHistory()
   })
 
@@ -75,6 +82,16 @@ describe('SendToRow Component', function () {
       )
     })
 
+    it('should call updateSendToWarning', () => {
+      assert.equal(propsMethodSpies.updateSendToWarning.callCount, 0)
+      instance.handleToChange('mockTo2', '', '', 'mockToWarning')
+      assert.equal(propsMethodSpies.updateSendToWarning.callCount, 1)
+      assert.deepEqual(
+        propsMethodSpies.updateSendToWarning.getCall(0).args,
+        [{ to: 'mockToWarningObject:mockTo2mockToWarning' }]
+      )
+    })
+
     it('should not call updateGas if there is a to error', () => {
       assert.equal(propsMethodSpies.updateGas.callCount, 0)
       instance.handleToChange('mockTo2')
@@ -138,11 +155,11 @@ describe('SendToRow Component', function () {
       openDropdown()
       assert.equal(propsMethodSpies.openToDropdown.callCount, 1)
       assert.equal(SendToRow.prototype.handleToChange.callCount, 0)
-      onChange({ toAddress: 'mockNewTo', nickname: 'mockNewNickname', toError: 'mockToError' })
+      onChange({ toAddress: 'mockNewTo', nickname: 'mockNewNickname', toError: 'mockToError', toWarning: 'mockToWarning' })
       assert.equal(SendToRow.prototype.handleToChange.callCount, 1)
       assert.deepEqual(
         SendToRow.prototype.handleToChange.getCall(0).args,
-        ['mockNewTo', 'mockNewNickname', 'mockToError']
+        ['mockNewTo', 'mockNewNickname', 'mockToError', 'mockToWarning']
       )
     })
   })
diff --git a/ui/app/components/send/send-content/send-to-row/tests/send-to-row-container.test.js b/ui/app/components/send/send-content/send-to-row/tests/send-to-row-container.test.js
index 95efdd7cc..aa09f01a9 100644
--- a/ui/app/components/send/send-content/send-to-row/tests/send-to-row-container.test.js
+++ b/ui/app/components/send/send-content/send-to-row/tests/send-to-row-container.test.js
@@ -12,6 +12,7 @@ const duckActionSpies = {
   closeToDropdown: sinon.spy(),
   openToDropdown: sinon.spy(),
   updateSendErrors: sinon.spy(),
+  updateSendWarnings: sinon.spy(),
 }
 
 proxyquire('../send-to-row.container.js', {
@@ -32,6 +33,7 @@ proxyquire('../send-to-row.container.js', {
   './send-to-row.selectors.js': {
     getToDropdownOpen: (s) => `mockToDropdownOpen:${s}`,
     sendToIsInError: (s) => `mockInError:${s}`,
+    sendToIsInWarning: (s) => `mockInWarning:${s}`,
     getTokens: (s) => `mockTokens:${s}`,
   },
   '../../../../actions': actionSpies,
@@ -46,6 +48,7 @@ describe('send-to-row container', () => {
       assert.deepEqual(mapStateToProps('mockState'), {
         hasHexData: true,
         inError: 'mockInError:mockState',
+        inWarning: 'mockInWarning:mockState',
         network: 'mockNetwork:mockState',
         selectedToken: 'mockSelectedToken:mockState',
         to: 'mockTo:mockState',
@@ -114,6 +117,18 @@ describe('send-to-row container', () => {
       })
     })
 
+    describe('updateSendToWarning()', () => {
+      it('should dispatch an action', () => {
+        mapDispatchToPropsObject.updateSendToWarning('mockToWarningObject')
+        assert(dispatchSpy.calledOnce)
+        assert(duckActionSpies.updateSendWarnings.calledOnce)
+        assert.equal(
+          duckActionSpies.updateSendWarnings.getCall(0).args[0],
+          'mockToWarningObject'
+        )
+      })
+    })
+
   })
 
 })
diff --git a/ui/app/components/send/send-content/send-to-row/tests/send-to-row-utils.test.js b/ui/app/components/send/send-content/send-to-row/tests/send-to-row-utils.test.js
index 8d4f26e15..f6abb26e6 100644
--- a/ui/app/components/send/send-content/send-to-row/tests/send-to-row-utils.test.js
+++ b/ui/app/components/send/send-content/send-to-row/tests/send-to-row-utils.test.js
@@ -19,6 +19,7 @@ const toRowUtils = proxyquire('../send-to-row.utils.js', {
 })
 const {
   getToErrorObject,
+  getToWarningObject,
 } = toRowUtils
 
 describe('send-to-row utils', () => {
@@ -78,4 +79,29 @@ describe('send-to-row utils', () => {
     })
   })
 
+  describe('getToWarningObject()', () => {
+    it('should return a known address recipient if to is truthy but part of state tokens', () => {
+      assert.deepEqual(getToWarningObject('0xabc123', undefined, [{'address': '0xabc123'}], {'address': '0xabc123'}), {
+        to: KNOWN_RECIPIENT_ADDRESS_ERROR,
+      })
+    })
+
+    it('should null if to is truthy part of tokens but selectedToken falsy', () => {
+      assert.deepEqual(getToWarningObject('0xabc123', undefined, [{'address': '0xabc123'}]), {
+        to: null,
+      })
+    })
+
+    it('should return a known address recipient if to is truthy but part of contract metadata', () => {
+      assert.deepEqual(getToWarningObject('0x89d24a6b4ccb1b6faa2625fe562bdd9a23260359', undefined, [{'address': '0xabc123'}], {'address': '0xabc123'}), {
+        to: KNOWN_RECIPIENT_ADDRESS_ERROR,
+      })
+    })
+    it('should null if to is truthy part of contract metadata but selectedToken falsy', () => {
+      assert.deepEqual(getToWarningObject('0x89d24a6b4ccb1b6faa2625fe562bdd9a23260359', undefined, [{'address': '0xabc123'}], {'address': '0xabc123'}), {
+        to: KNOWN_RECIPIENT_ADDRESS_ERROR,
+      })
+    })
+  })
+
 })
diff --git a/ui/app/components/send/send.selectors.js b/ui/app/components/send/send.selectors.js
index 443c82af5..140da2ce9 100644
--- a/ui/app/components/send/send.selectors.js
+++ b/ui/app/components/send/send.selectors.js
@@ -51,6 +51,7 @@ const selectors = {
   getSendMaxModeState,
   getSendTo,
   getSendToAccounts,
+  getSendWarnings,
   getTokenBalance,
   getTokenExchangeRate,
   getUnapprovedTxs,
@@ -268,6 +269,10 @@ function getSendToAccounts (state) {
   return Object.entries(allAccounts).map(([key, account]) => account)
 }
 
+function getSendWarnings (state) {
+  return state.send.warnings
+}
+
 function getTokenBalance (state) {
   return state.metamask.send.tokenBalance
 }
diff --git a/ui/app/css/itcss/components/send.scss b/ui/app/css/itcss/components/send.scss
index 19e840094..4372f275c 100644
--- a/ui/app/css/itcss/components/send.scss
+++ b/ui/app/css/itcss/components/send.scss
@@ -520,6 +520,13 @@
     color: $red;
   }
 
+  &__warning {
+    font-size: 12px;
+    line-height: 12px;
+    left: 8px;
+    color: $orange;
+  }
+
   &__error-border {
     color: $red;
   }
diff --git a/ui/app/ducks/send.duck.js b/ui/app/ducks/send.duck.js
index 4d212bd03..90e92140b 100644
--- a/ui/app/ducks/send.duck.js
+++ b/ui/app/ducks/send.duck.js
@@ -6,6 +6,7 @@ const CLOSE_FROM_DROPDOWN = 'metamask/send/CLOSE_FROM_DROPDOWN'
 const OPEN_TO_DROPDOWN = 'metamask/send/OPEN_TO_DROPDOWN'
 const CLOSE_TO_DROPDOWN = 'metamask/send/CLOSE_TO_DROPDOWN'
 const UPDATE_SEND_ERRORS = 'metamask/send/UPDATE_SEND_ERRORS'
+const UPDATE_SEND_WARNINGS = 'metamask/send/UPDATE_SEND_WARNINGS'
 const RESET_SEND_STATE = 'metamask/send/RESET_SEND_STATE'
 const SHOW_GAS_BUTTON_GROUP = 'metamask/send/SHOW_GAS_BUTTON_GROUP'
 const HIDE_GAS_BUTTON_GROUP = 'metamask/send/HIDE_GAS_BUTTON_GROUP'
@@ -16,6 +17,7 @@ const initState = {
   toDropdownOpen: false,
   gasButtonGroupShown: true,
   errors: {},
+  warnings: {},
 }
 
 // Reducer
@@ -46,6 +48,13 @@ export default function reducer ({ send: sendState = initState }, action = {}) {
           ...action.value,
         },
       })
+    case UPDATE_SEND_WARNINGS:
+      return extend(newState, {
+        warnings: {
+          ...newState.warnings,
+          ...action.value,
+        },
+      })
     case SHOW_GAS_BUTTON_GROUP:
       return extend(newState, {
         gasButtonGroupShown: true,
@@ -85,6 +94,13 @@ export function updateSendErrors (errorObject) {
   }
 }
 
+export function updateSendWarnings (warningObject) {
+  return {
+    type: UPDATE_SEND_WARNINGS,
+    value: warningObject,
+  }
+}
+
 export function resetSendState () {
   return { type: RESET_SEND_STATE }
 }
diff --git a/ui/app/ducks/tests/send-duck.test.js b/ui/app/ducks/tests/send-duck.test.js
index ffd8bfb4b..43f51c631 100644
--- a/ui/app/ducks/tests/send-duck.test.js
+++ b/ui/app/ducks/tests/send-duck.test.js
@@ -6,6 +6,7 @@ import SendReducer, {
   updateSendErrors,
   showGasButtonGroup,
   hideGasButtonGroup,
+  updateSendWarnings,
 } from '../send.duck.js'
 
 describe('Send Duck', () => {
@@ -19,12 +20,14 @@ describe('Send Duck', () => {
     toDropdownOpen: false,
     errors: {},
     gasButtonGroupShown: true,
+    warnings: {},
   }
   const OPEN_FROM_DROPDOWN = 'metamask/send/OPEN_FROM_DROPDOWN'
   const CLOSE_FROM_DROPDOWN = 'metamask/send/CLOSE_FROM_DROPDOWN'
   const OPEN_TO_DROPDOWN = 'metamask/send/OPEN_TO_DROPDOWN'
   const CLOSE_TO_DROPDOWN = 'metamask/send/CLOSE_TO_DROPDOWN'
   const UPDATE_SEND_ERRORS = 'metamask/send/UPDATE_SEND_ERRORS'
+  const UPDATE_SEND_WARNINGS = 'metamask/send/UPDATE_SEND_WARNINGS'
   const RESET_SEND_STATE = 'metamask/send/RESET_SEND_STATE'
   const SHOW_GAS_BUTTON_GROUP = 'metamask/send/SHOW_GAS_BUTTON_GROUP'
   const HIDE_GAS_BUTTON_GROUP = 'metamask/send/HIDE_GAS_BUTTON_GROUP'
@@ -173,4 +176,11 @@ describe('Send Duck', () => {
     )
   })
 
+  describe('updateSendWarnings', () => {
+    assert.deepEqual(
+      updateSendWarnings('mockWarningObject'),
+      { type: UPDATE_SEND_WARNINGS, value: 'mockWarningObject' }
+    )
+  })
+
 })