How to serialize outlook email object?

public void ReadMails()
{
try
{
app = new Microsoft.Office.Interop.Outlook.Application();
ns = app.GetNamespace("MAPI");
ns.Logon(null, null, false, false);

inboxFolder = ns.GetDefaultFolder(Microsoft.Office.Interop.Outlook.OlDefaultFolders.olFolderInbox);

List<OutlookMails> mailList = new List<OutlookMails>();
int errorCount = 0;
decimal garbage = 0;
for (int i = 1; i <= inboxFolder.Items.Count; i++)
{
try
{
item = (Microsoft.Office.Interop.Outlook.MailItem)inboxFolder.Items[i];

OutlookMails outLookMail = new OutlookMails();
outLookMail.MailSubject = item.Subject;
outLookMail.Mail = item;
mailList.Add(outLookMail);
}
catch (System.Exception ex)
{
errorCount++;
}
}
}
catch (System.Runtime.InteropServices.COMException ex)
{
Console.WriteLine(ex.ToString());
}
finally
{
ns = null;
app = null;
inboxFolder = null;
}
}


above is my sample code to read the outlook email, where I will be reading outlook email one at a time.
item = (Microsoft.Office.Interop.Outlook.MailItem)inboxFolder.Items[i];
We have an API where which will write any type value/object(serialized) to database.
Now, my problem is I am not able to write this outlook email object to database using above API.


Please suggest me if you any solution to serialize outlook email.

-Please don't suggest me to ask API venders for solution.