diff --git a/services/web/app/src/Features/Authentication/AuthenticationController.js b/services/web/app/src/Features/Authentication/AuthenticationController.js
index 0df10e07159..a139611302f 100644
--- a/services/web/app/src/Features/Authentication/AuthenticationController.js
+++ b/services/web/app/src/Features/Authentication/AuthenticationController.js
@@ -663,8 +663,16 @@ function _loginAsyncHandlers(req, user, anonymousAnalyticsId, isNewUser) {
   return (user._login_req_ip = req.ip)
 }
 
+AuthenticationController.createSessionForUser = function (user, req, callback) {
+  const anonymousAnalyticsId = req.session.analyticsId
+  const isNewUser = req.session.justRegistered || false
+  _loginAsyncHandlers(req, user, anonymousAnalyticsId, isNewUser)
+  _afterLoginSessionSetup(req, user, callback)
+}
+
 AuthenticationController.promises = {
   finishLogin: AuthenticationController._finishLoginAsync,
+  createSessionForUser: promisify(AuthenticationController.createSessionForUser),
 }
 
 module.exports = AuthenticationController
diff --git a/services/web/app/src/Features/User/UserController.js b/services/web/app/src/Features/User/UserController.js
index 3c1818979f0..f0e07a9721a 100644
--- a/services/web/app/src/Features/User/UserController.js
+++ b/services/web/app/src/Features/User/UserController.js
@@ -23,6 +23,8 @@ const {
 } = require('../../infrastructure/RequestContentTypeDetection')
 const Modules = require('../../infrastructure/Modules')
 const OneTimeTokenHandler = require('../Security/OneTimeTokenHandler')
+const EmailHelper = require('../Helpers/EmailHelper')
+const AuthenticationController = require('../Authentication/AuthenticationController')
 
 async function _sendSecurityAlertClearedSessions(user) {
   const emailOptions = {
@@ -173,6 +175,34 @@ async function clearSessions(req, res, next) {
   res.sendStatus(201)
 }
 
+async function createSession(req, res) {
+  const email = EmailHelper.parseEmail(req.body?.email)
+  if (!email) {
+    return res.status(400).json({ error: 'invalid_email' })
+  }
+
+  const user = await UserGetter.promises.getUserByAnyEmail(email)
+
+  if (!user) {
+    return res.sendStatus(404)
+  }
+
+  if (user.suspended) {
+    return res.status(403).json({ error: 'account_suspended' })
+  }
+
+  await AuthenticationController.promises.createSessionForUser(user, req)
+
+  return res.status(201).json({
+    user: {
+      id: user._id.toString(),
+      email: user.email,
+      first_name: user.first_name,
+      last_name: user.last_name,
+    },
+  })
+}
+
 async function ensureAffiliation(user) {
   if (!Features.hasFeature('affiliations')) {
     return
@@ -500,6 +530,7 @@ async function expireDeletedUsersAfterDuration(req, res, next) {
 
 module.exports = {
   clearSessions: expressify(clearSessions),
+  createSession: expressify(createSession),
   changePassword: expressify(changePassword),
   tryDeleteUser: expressify(tryDeleteUser),
   subscribe: expressify(subscribe),
diff --git a/services/web/app/src/router.mjs b/services/web/app/src/router.mjs
index 42a041248f4..d7ef91791b8 100644
--- a/services/web/app/src/router.mjs
+++ b/services/web/app/src/router.mjs
@@ -496,6 +496,12 @@ async function initialize(webRouter, privateApiRouter, publicApiRouter) {
     UserInfoController.getPersonalInfo
   )
 
+  privateApiRouter.post(
+    '/internal/create-user-session',
+    AuthenticationController.requirePrivateApiAuth(),
+    UserController.createSession
+  )
+
   webRouter.get(
     '/user/reconfirm',
     UserPagesController.renderReconfirmAccountPage