Get Information About Multiple Accounts in outlook

//namespace to use (add microsoft.office.interop.outlook dll )

using Outlook = Microsoft.Office.Interop.Outlook;

private void getallAccountsInOutlook()
{
    Outlook.Accounts accounts = Application.Session.Accounts;
    foreach (Outlook.Account account in accounts)
    {
        try
        {
            StringBuilder allInfoInThisString = new StringBuilder();
            allInfoInThisString.AppendLine("Account: " + account.DisplayName);
            if (string.IsNullOrEmpty(account.SmtpAddress)
                || string.IsNullOrEmpty(account.UserName))
            {
                Outlook.AddressEntry addressEntryObject =account.CurrentUser.AddressEntry as Outlook.AddressEntry;
                if (addressEntryObject.Type == "EX")
                {
                    Outlook.ExchangeUser oEU =
                        addressEntryObject.GetExchangeUser()
                        as Outlook.ExchangeUser;
                    allInfoInThisString.AppendLine("UserName: " +
                        oEU.Name);
                    allInfoInThisString.AppendLine("SMTP: " +
                        oEU.PrimarySmtpAddress);
                    allInfoInThisString.AppendLine("Exchange Server: " +
                        account.ExchangeMailboxServerName);
                    allInfoInThisString.AppendLine("Exchange Server Version: " +
                        account.ExchangeMailboxServerVersion); 
                }
                else
                {
                    allInfoInThisString.AppendLine("UserName: " +
                        addressEntryObject.Name);
                    allInfoInThisString.AppendLine("SMTP: " +
                        addressEntryObject.Address);
                }
            }
            else
            {
                allInfoInThisString.AppendLine("UserName: " +
                    account.UserName);
                allInfoInThisString.AppendLine("SMTP: " +
                    account.SmtpAddress);
                if(account.AccountType == 
                    Outlook.OlAccountType.olExchange)
                {
                    allInfoInThisString.AppendLine("Exchange Server: " +
                        account.ExchangeMailboxServerName);
                    allInfoInThisString.AppendLine("Exchange Server Version: " +
                        account.ExchangeMailboxServerVersion); 
                }
            }
            if(account.DeliveryStore !=null)
            {
                allInfoInThisString.AppendLine("Delivery Store: " +
                    account.DeliveryStore.DisplayName);
            }
            allInfoInThisString.AppendLine("_________________________");
            Debug.Write(allInfoInThisString.ToString());
        }
        catch (Exception ex)
        {
            Debug.WriteLine(ex.Message);
        }
    }
}