diff --git a/src/components/DownloadModal.tsx b/src/components/DownloadModal.tsx
index 8c64953..b7dd491 100644
--- a/src/components/DownloadModal.tsx
+++ b/src/components/DownloadModal.tsx
@@ -1,15 +1,10 @@
-import React from "react"
+import React, { useEffect, useState } from "react"
 import * as Dialog from "@radix-ui/react-dialog"
 import * as Form from "@radix-ui/react-form"
 import { Cross2Icon, DownloadIcon, PlusIcon } from "@radix-ui/react-icons"
 import { useForm, Controller, type SubmitHandler } from "react-hook-form"
-// import {
-//   getAuth,
-//   isSignInWithEmailLink,
-//   sendSignInLinkToEmail,
-//   signInWithEmailLink,
-// } from "firebase/auth"
-// import { getDownloadUrl, actionCodeSettings, finishSignIn } from "../firebase"
+import { isSignInWithEmailLink, sendSignInLinkToEmail } from "firebase/auth"
+import { auth, getDownloadUrl, actionCodeSettings, finishSignIn } from "../firebase"
 import { CustomInput } from "./CustomInput.tsx"
 import { CustomTextarea } from "./CustomTextarea.tsx"
 import { CheckboxGroup } from "./CheckboxGroup.tsx"
@@ -23,11 +18,10 @@ export interface Inputs {
 }
 
 const DownloadModal = () => {
-  //const auth = getAuth()
   const [isOpen, setIsOpen] = React.useState(false)
   const [downloadUrl, setDownloadUrl] = React.useState("")
   const [message, setMessage] = React.useState("")
-
+  const [user, setUser] = useState(auth.currentUser)
   const { handleSubmit, control, register, setValue } = useForm<Inputs>()
 
   const options = [
@@ -46,40 +40,48 @@ const DownloadModal = () => {
     { value: "codebook_pratio", label: "PRATIO" },
   ]
 
-  // // on load, check if user has validated email; set download url
-  // if (isSignInWithEmailLink(auth, window.location.href)) {
-  //   // Additional state parameters can also be passed via URL.
-  //   // This can be used to continue the user's intended action before triggering
-  //   let email = window.localStorage.getItem("emailForSignIn")
-  //   if (!email) {
-  //     // User opened the link on a different device. To prevent session fixation
-  //     // attacks, ask the user to provide the associated email again. For example:
-  //     email = window.prompt("Please provide your email for confirmation")
-  //   }
-  //   try {
-  //     const files = JSON.parse(window.localStorage.getItem("fileNameList") as string)
-  //     console.log(files.length)
-  //     // if (user.emailVerified && files) {
-  //     //   const urls = files.map(async (fileName: string) => await getDownloadUrl(fileName))
-  //     //   console.log(urls)
-  //     //
-  //     //   // TODO: push data to history table if signed in
-  //     // }
-  //   } catch (e) {
-  //     const error = e as string
-  //     setMessage(`Error: ${error}`)
-  //   }
-  // }
+  useEffect(() => {
+    // on load, check if user has validated email; set download url
+    const getUser = async (email: any) => {
+      setUser(await finishSignIn(email))
+    }
+    if (isSignInWithEmailLink(auth, window.location.href)) {
+      // Additional state parameters can also be passed via URL.
+      // This can be used to continue the user's intended action before triggering
+      let email = window.localStorage.getItem("emailForSignIn")
+      if (!email) {
+        // User opened the link on a different device. To prevent session fixation
+        // attacks, ask the user to provide the associated email again. For example:
+        email = window.prompt("Please provide your email for confirmation")
+      }
+      try {
+        getUser(email)
+        const files = JSON.parse(window.localStorage.getItem("fileNameList") as string)
+        console.log(files.length)
+        if (user && user.emailVerified && files) {
+          setIsOpen(true)
+          const urls = files.map(async (fileName: string) => await getDownloadUrl(fileName))
+          console.log(urls)
+          setDownloadUrl(urls)
+
+          // TODO: push data to history table if signed in
+        }
+      } catch (e) {
+        const error = e as string
+        setMessage(`Error: ${error}`)
+      }
+    }
+  }, [])
 
   const onSubmit: SubmitHandler<Inputs> = async (data) => {
     console.log(data)
     console.log(data.files)
     // send validation email
     try {
-      //const result = await sendSignInLinkToEmail(auth, data.email, actionCodeSettings)
+      const result = await sendSignInLinkToEmail(auth, data.email, actionCodeSettings)
       window.localStorage.setItem("emailForSignIn", data.email)
       window.localStorage.setItem("fileNameList", JSON.stringify(data.files))
-      //return result
+      return result
     } catch (e) {
       const error = e as string
       setMessage(`Error: ${error}`)
diff --git a/src/firebase.js b/src/firebase.js
index 3e64687..2c229c7 100644
--- a/src/firebase.js
+++ b/src/firebase.js
@@ -1,5 +1,5 @@
 import { initializeApp } from "firebase/app"
-import { doc, getDoc, getFirestore, setDoc } from "firebase/firestore"
+import { getFirestore } from "firebase/firestore"
 import {
   EmailAuthProvider,
   getAuth,