added remote db source

app/Models/RemoteEmail.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Facades\Validator;
+
+class RemoteEmail extends Model
+{
+    protected $connection = 'mysql_remote';
+    protected $table = 'emails';
+
+    public static function fetchEmailFromDB($email)
+    {
+        $validator = Validator::make(['email' => $email], [
+            'email' => 'required|email'
+        ]);
+
+        if ($validator->fails()) {
+            return [];
+        }
+        return self::whereJsonContains('to', $email)->orderBy('timestamp', 'desc')->get();
+    }
+}