diff --git a/identity-service/sequelize/migrations/20220711214812-add-deliverability.js b/identity-service/sequelize/migrations/20220711214812-add-deliverability.js
new file mode 100644
index 00000000000..eb70e683fcf
--- /dev/null
+++ b/identity-service/sequelize/migrations/20220711214812-add-deliverability.js
@@ -0,0 +1,17 @@
+'use strict'
+
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    return queryInterface.addColumn(
+      'Users',
+      'isEmailDeliverable', {
+        type: Sequelize.BOOLEAN,
+        defaultValue: true
+      }
+    )
+  },
+
+  down: (queryInterface, Sequelize) => {
+    return queryInterface.removeColumn('Users', 'isEmailDeliverable')
+  }
+}
diff --git a/identity-service/src/models/user.js b/identity-service/src/models/user.js
index 518d45dc18b..fb700f7081c 100644
--- a/identity-service/src/models/user.js
+++ b/identity-service/src/models/user.js
@@ -45,6 +45,11 @@ module.exports = (sequelize, DataTypes) => {
       allowNull: false,
       defaultValue: false
     },
+    isEmailDeliverable: {
+      type: DataTypes.BOOLEAN,
+      allowNull: false,
+      defaultValue: true
+    },
     // this is the last time we have an activity for this user
     // could be updated whenever we relay a tx on behalf of them
     lastSeenDate: {
diff --git a/identity-service/src/notifications/sendDownloadAppEmails.js b/identity-service/src/notifications/sendDownloadAppEmails.js
index 25931f4714f..e57f11771ad 100644
--- a/identity-service/src/notifications/sendDownloadAppEmails.js
+++ b/identity-service/src/notifications/sendDownloadAppEmails.js
@@ -23,7 +23,8 @@ async function processDownloadAppEmail (expressApp, audiusLibs) {
     }
     // Get all users who have not signed in mobile and not been sent native mobile email within 2 days
     let now = moment()
-    let twoDayAgo = now.clone().subtract(2, 'days').format()
+    let twoDaysAgo = now.clone().subtract(2, 'days').format()
+    let fiveDaysAgo = now.clone().subtract(5, 'days').format()
 
     let emailUsersWalletAddress = await models.UserEvents.findAll({
       attributes: ['walletAddress'],
@@ -31,7 +32,8 @@ async function processDownloadAppEmail (expressApp, audiusLibs) {
         hasSignedInNativeMobile: false,
         hasSentDownloadAppEmail: false,
         createdAt: {
-          [models.Sequelize.Op.lte]: twoDayAgo
+          [models.Sequelize.Op.lte]: twoDaysAgo,
+          [models.Sequelize.Op.gt]: fiveDaysAgo
         }
       }
     }).map(x => x.walletAddress)
diff --git a/identity-service/src/notifications/sendNotificationEmails.js b/identity-service/src/notifications/sendNotificationEmails.js
index f38da22a5be..a28415f97d2 100644
--- a/identity-service/src/notifications/sendNotificationEmails.js
+++ b/identity-service/src/notifications/sendNotificationEmails.js
@@ -205,7 +205,8 @@ async function processEmailNotifications (expressApp, audiusLibs) {
       where: {
         blockchainUserId: {
           [models.Sequelize.Op.in]: allUsersWithUnseenNotifications
-        }
+        },
+        isEmailDeliverable: true
       }
     })
 
diff --git a/identity-service/src/routes/user.js b/identity-service/src/routes/user.js
index 828d13fbcd8..6b125528a57 100644
--- a/identity-service/src/routes/user.js
+++ b/identity-service/src/routes/user.js
@@ -1,7 +1,9 @@
+const axios = require('axios')
 const models = require('../models')
 const { handleResponse, successResponse, errorResponseBadRequest } = require('../apiHelpers')
 const authMiddleware = require('../authMiddleware')
 const captchaMiddleware = require('../captchaMiddleware')
+const config = require('../config')
 
 module.exports = function (app) {
   /**
@@ -27,12 +29,26 @@ module.exports = function (app) {
       const IP = req.headers['x-forwarded-for'] || req.connection.remoteAddress
 
       try {
+        let isEmailDeliverable = true
+        try {
+          const checkValidEmailUrl = `https://api.mailgun.net/v4/address/validate?address=${encodeURIComponent(email)}`
+          const checkEmailResponse = await axios.get(checkValidEmailUrl, {
+            auth: {
+              username: 'api', password: config.get('mailgunApiKey')
+            }
+          })
+          isEmailDeliverable = checkEmailResponse.data.result === 'deliverable' || checkEmailResponse.data.result === 'unknown'
+        } catch (err) {
+          req.logger.error(`Unable to fetch validate email from mailgun for ${email}`, err)
+        }
+
         await models.User.create({
           email,
           // Store non checksummed wallet address
           walletAddress: body.walletAddress.toLowerCase(),
           lastSeenDate: Date.now(),
-          IP
+          IP,
+          isEmailDeliverable
         })
 
         return successResponse()