feat: added Email connectivity

Signed-off-by: limited_dev <loginakkisativ@gmail.com>

ImageBoardServerApp/Util/Postman.cs

@@ -0,0 +1,25 @@
+using System.Net;
+using System.Net.Mail;
+
+namespace ImageBoardServerApp.Util;
+
+public static class Postman
+{
+    private static SmtpClient smtpClient;
+    
+    public static void logon()
+    {
+        smtpClient = new SmtpClient("smtp.bulletboards.xyz")
+        {
+            Port = 587,
+            Credentials = new NetworkCredential("noreply@bulletboards.xyz", "frogARdI,97,#"),
+            EnableSsl = true,
+        };
+    }
+
+    public static void sendMail(string to, string subj, string body)
+    {
+        smtpClient.Send("noreply@bulletboards.xyz", to, subj, body);
+    }
+    
+}