Using Visual Studio 2022
outlook 365 with IMAP account
VSTO addin. c#
Event : newmaileX to capture every incoming email. If certain subject, then I enter text into the body. If body is html, I find the tag and insert after. I have create a button on ribbon to test, and the email subject is altered and new text is in the body. fine so far. When the newmailex is fired, it runs my code, but sometimes it does not save the changes, and sometimes it does.
Why ?
if I add "mailItem.Save()" this works, but I then get duplicates of the same email. Sometimes upto 10 duplicates. Is this an IMAP thing ? Below is my code.
I have tried just VBA instead of the vsto, with newmailex and i get the same results.
outlook 365 with IMAP account
VSTO addin. c#
Event : newmaileX to capture every incoming email. If certain subject, then I enter text into the body. If body is html, I find the tag and insert after. I have create a button on ribbon to test, and the email subject is altered and new text is in the body. fine so far. When the newmailex is fired, it runs my code, but sometimes it does not save the changes, and sometimes it does.
Why ?
if I add "mailItem.Save()" this works, but I then get duplicates of the same email. Sometimes upto 10 duplicates. Is this an IMAP thing ? Below is my code.
I have tried just VBA instead of the vsto, with newmailex and i get the same results.
Code:
void NewMail_Event(String entryIDCollection)
{
Outlook.NameSpace outlookNS = this.Application.GetNamespace("MAPI");
Outlook.MailItem mailItem = null;
try
{
string sTag;
string sBody;
int nPos;
sTag = "<table border=\"1\" cellspacing=\"0\"><tr bgcolor=\"#f5e942\"><td><font color=\"#FF0000\" size=\"4\">";
sTag += "This email originated from outside and was not listed in our safe senders list.<br>";
sTag += "DO NOT action, click on any links or open attachments unless you recognise the sender and know the content is safe.";
sTag += "</font></td></tr></table><br>";
string sSubject = null;
string filter = "[EXTERNAL]";
string[] sEmails = entryIDCollection.Split(',');
foreach (string sEmail in sEmails)
{
mailItem = (Outlook.MailItem)outlookNS.GetItemFromID(sEmail, Type.Missing);
if (mailItem.Subject != null)
{
File.AppendAllText("c:\\1data\\desktop\\vstolog.txt", mailItem.Subject + "\r\n");
if (mailItem.Subject.Length >= 10)
{
if (mailItem.Subject.ToUpper().StartsWith(filter))
{
sSubject = mailItem.Subject.Substring(filter.Length, mailItem.Subject.Length - filter.Length);
mailItem.Subject = sSubject;
sBody = mailItem.HTMLBody;
if (sBody.Contains("<body>") || sBody.Contains("<BODY>"))
{
if (sBody.Contains("<BODY>"))
{
sBody = sBody.Replace("<BODY>", "<body>" + sTag);
}
else
{
sBody = sBody.Replace("<body>", "<body>" + sTag);
}
}
else
{
if (sBody.Contains("<body") || sBody.Contains("<BODY"))
{
if (sBody.Contains("<body"))
{
nPos = sBody.IndexOf("<body", 0);
}
else
{
nPos = sBody.IndexOf("<BODY", 0);
}
nPos = sBody.IndexOf(">", nPos);
sBody = sBody.Insert(nPos + 1, sTag);
}
else
{
sBody = sTag + sBody;
}
}
if (mailItem.BodyFormat == OlBodyFormat.olFormatHTML)
{
mailItem.HTMLBody = sBody;
}
else
{
mailItem.Body = sBody;
}
//mailItem.Close(OlInspectorClose.olSave);
}
}
}
Marshal.ReleaseComObject(mailItem);
mailItem = null;
}
}
catch (Exception eX)
{
MessageBox.Show(eX.Message);
}
finally
{
if (mailItem != null) Marshal.ReleaseComObject(mailItem);
mailItem = null;
if (outlookNS != null) Marshal.ReleaseComObject(outlookNS);
outlookNS = null;
}
}
