diff --git a/constants/error.constant.js b/constants/error.constant.js
index 06ab069d..f2e6c535 100644
--- a/constants/error.constant.js
+++ b/constants/error.constant.js
@@ -9,6 +9,7 @@ const VOLUNTEER_404_MESSAGE = "Volunteer not found";
 const SETTINGS_404_MESSAGE = "Settings not found";
 
 const ACCOUNT_TYPE_409_MESSAGE = "Wrong account type";
+const ACCOUNT_EMAIL_409_MESSAGE = "Email already in use";
 const SPONSOR_ID_409_MESSAGE = "Conflict with sponsor accountId link";
 const VOLUNTEER_ID_409_MESSAGE = "Conflict with volunteer accountId link";
 const HACKER_ID_409_MESSAGE = "Conflict with hacker accountId link";
@@ -50,6 +51,7 @@ module.exports = {
     TEAM_404_MESSAGE: TEAM_404_MESSAGE,
     RESUME_404_MESSAGE: RESUME_404_MESSAGE,
     ACCOUNT_TYPE_409_MESSAGE: ACCOUNT_TYPE_409_MESSAGE,
+    ACCOUNT_EMAIL_409_MESSAGE: ACCOUNT_EMAIL_409_MESSAGE,
     SPONSOR_ID_409_MESSAGE: SPONSOR_ID_409_MESSAGE,
     VOLUNTEER_ID_409_MESSAGE: VOLUNTEER_ID_409_MESSAGE,
     TEAM_MEMBER_409_MESSAGE: TEAM_MEMBER_409_MESSAGE,
diff --git a/middlewares/account.middleware.js b/middlewares/account.middleware.js
index bea0e578..4d333afb 100644
--- a/middlewares/account.middleware.js
+++ b/middlewares/account.middleware.js
@@ -156,6 +156,24 @@ async function addAccount(req, res, next) {
     return next();
 }
 
+/**
+ * @async
+ * @function validateUniqueEmail
+ * @param {{params:{id: string}, body: {email: string}}} req
+ * @param {*} res
+ * @description Gets an account by email in req.body, and if found ensures id matches req.params.id
+ */
+async function validateUniqueEmail(req, res, next) {
+    const acc = await Services.Account.findByEmail(req.body.email);
+    if (acc && acc.id != req.params.id) {
+        return next({
+            status: 409,
+            message: Constants.Error.ACCOUNT_EMAIL_409_MESSAGE,
+        });
+    }
+    return next();
+}
+
 /**
  * Updates an account that is specified by req.params.id
  * @param {{params:{id: string}, body: *}} req
@@ -254,5 +272,6 @@ module.exports = {
     updatePassword: Middleware.Util.asyncMiddleware(updatePassword),
     addAccount: Middleware.Util.asyncMiddleware(addAccount),
     updateAccount: Middleware.Util.asyncMiddleware(updateAccount),
-    inviteAccount: Middleware.Util.asyncMiddleware(inviteAccount)
+    inviteAccount: Middleware.Util.asyncMiddleware(inviteAccount),
+    validateUniqueEmail: Middleware.Util.asyncMiddleware(validateUniqueEmail)
 };
diff --git a/routes/api/account.js b/routes/api/account.js
index dfa7c802..6f7cc559 100644
--- a/routes/api/account.js
+++ b/routes/api/account.js
@@ -21,7 +21,7 @@ const Services = {
 };
 
 module.exports = {
-    activate: function(apiRouter) {
+    activate: function (apiRouter) {
         const accountRouter = express.Router();
 
         /**
@@ -252,6 +252,7 @@ module.exports = {
             Middleware.parseBody.middleware,
             Middleware.Account.parsePatch,
 
+            Middleware.Account.validateUniqueEmail,
             Middleware.Account.updateAccount,
             Middleware.Auth.sendConfirmAccountEmail,
             // no parse account because will use req.body as information