✅ View:
---------------------------------
<form action="{{ route('subscriber_send_email') }}" method="post" class="form_subscribe_ajax">
    @csrf
    <div class="form-group">
        <input type="text" name="email" class="form-control">
        <span class="text-danger error-text email_error"></span>
    </div>
    <div class="form-group">
        <input type="submit" class="btn btn-primary" value="Subscribe Now">
    </div>
</form>

<script>
    (function($){
        $(".form_subscribe_ajax").on('submit', function(e){
            e.preventDefault();
            $('#loader').show();
            var form = this;
            $.ajax({
                url:$(form).attr('action'),
                method:$(form).attr('method'),
                data:new FormData(form),
                processData:false,
                dataType:'json',
                contentType:false,
                beforeSend:function(){
                    $(form).find('span.error-text').text('');
                },
                success:function(data)
                {
                    $('#loader').hide();
                    if(data.code == 0)
                    {
                        $.each(data.error_message, function(prefix, val) {
                            $(form).find('span.'+prefix+'_error').text(val[0]);
                        });
                    }
                    else if(data.code == 1)
                    {
                        $(form)[0].reset();
                        iziToast.success({
                            title: '',
                            position: 'topRight',
                            message: data.success_message,
                        });
                    }
                    
                }
            });
        });
    })(jQuery);
</script>
<div id="loader"></div>


✅ css:
----------------------------------
#loader {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    background: rgba(0,0,0,0.75) url(loading.gif) no-repeat center center;
    z-index: 10000;
}


✅ Controller:
----------------------------------

public function send_email(Request $request)
{
    $validator = \Validator::make($request->all(),[
        'email' => 'required|email'
    ]);

    if(!$validator->passes()) {
        return response()->json(['code'=>0,'error_message'=>$validator->errors()->toArray()]);
    } else {

        $token = hash('sha256', time());

        $obj = new Subscriber();
        $obj->email = $request->email;
        $obj->token = $token;
        $obj->status = 0;
        $obj->save();

        $verification_link = url('subscriber/verify/'.$request->email.'/'.$token);
        
        // Send email
        $subject = 'Subscriber Verification';
        $message = 'Please click on the link below to confirm subscription:<br>';
        $message .= '<a href="'.$verification_link.'">';
        $message .= $verification_link;
        $message .= '</a>';

        \Mail::to($request->email)->send(new Websitemail($subject,$message));

        return response()->json(['code'=>1,'success_message'=>'Please check your email to confirm subscription']);
    }
}

public function verify($email,$token)
{
    $subscriber_data = Subscriber::where('email',$email)->where('token',$token)->first();

    if($subscriber_data) {
        
        $subscriber_data->token = '';
        $subscriber_data->status = 1;
        $subscriber_data->update();

        return redirect()->route('home')->with('success', 'Your subscription is verified successfully!');

    } else {
        return redirect()->route('home');
    }

}



✅ web.php:
----------------------------------
Route::post('/subscriber/send-email', [SubscriberController::class, 'send_email'])->name('subscriber_send_email');
Route::get('/subscriber/verify/{email}/{token}', [SubscriberController::class, 'verify'])->name('subscriber_verify');