Email verification not sent to edu account

[Joe-ChenZ]

handler code:

const handleEmailVerification = (user) => {
      console.log("email verification sent")
      console.log(user);
      if (user)
        user.sendEmailVerification()
          .then(_ => alert(`Email Verification is sent to ${email}`))
          .catch(error => alert(error.message))
      else alert("User is null")
    }

    const handleDeleteUser = () => {
      const {user} = auth.currentUser
      if (user) {
        user.delete()
        console.log(`delete account ${email}`)
        return
      }
      auth
        .signInWithEmailAndPassword(email, password)
        .then(userCredentials => {
          const user = userCredentials.user;
          // console.log('Logged in with:', user.email);
          user.delete();
          console.log(`delete account ${email}`)
        })
        .catch(error => alert(error.message))
      // console.log(auth.currentUser)
    }

    const handleSignUp = () => {
      const {user} = auth
        .createUserWithEmailAndPassword(email, password)
        .then(userCredentials => {
          const user = userCredentials.user;
          console.log('Registered with:', user.email);

          handleEmailVerification(user)
        })
        .catch(error => alert(error.message))

    }

    const handleLogin = () => {
      const user = auth.currentUser;
      if (user) {
        user.reload().then(_ => {
          if (user.emailVerified) {
            auth
            .signInWithEmailAndPassword(email, password)
            .then(userCredentials => {
              const user = userCredentials.user;
              console.log('Logged in with:', user.email);
            })
            .catch(error => alert(error.message));
          } else {
            alert("email is not verified");
          }
        })
      } else {
        alert("User is null");
      }

UI code:

<KeyboardAvoidingView
      style={styles.container}
      behavior="padding"
    >
      <View style={styles.inputContainer}>
        <View>
        <TextInput
          placeholder="GT Username"
          value={email}
          onChangeText={text => setEmail(text)}
          style={styles.input}
          />
        </View>
        <TextInput
          placeholder="Password"
          value={password}
          onChangeText={text => setPassword(text)}
          style={styles.input}
          secureTextEntry
        />
      </View>

      <View style={styles.buttonContainer}>
        <TouchableOpacity
          onPress={handleLogin}
          style={styles.button}
        >
          <Text style={styles.buttonText}>Login</Text>
        </TouchableOpacity>

        <TouchableOpacity
          onPress={handleSignUp}
          style={[styles.button, styles.buttonOutline]}
        >
        <Text style={styles.buttonOutlineText}>Register</Text>
        </TouchableOpacity>

        <TouchableOpacity
          onPress={handleDeleteUser}
          style={[styles.button, styles.buttonOutline]}
        >
        <Text style={styles.buttonOutlineText}>Delete Account</Text>
        </TouchableOpacity>
        <TouchableOpacity
          onPress={()=>handleEmailVerification(auth.currentUser)}
          style={[styles.button, styles.buttonOutline]}
        >
        <Text style={styles.buttonOutlineText}>Resend Email Verification</Text>
        </TouchableOpacity>
      </View>

    </KeyboardAvoidingView>

firebase auth

import * as firebase from "firebase";
const auth = firebase.auth()

Very oddly, this code works for my personal gmail account, but no verification is ever sent to my school account, which ends with @gatech.edu