Retrieve Email from Exchange Server with Web Service (EWS) in VB.NET¶

Imports System.Globalization
Imports System.Text
Imports System.IO
Imports EAGetMail 'imports EAGetMail namespace

Module Module1

    Function _generateFileName(ByVal sequence As Integer) As String
        Dim currentDateTime As DateTime = DateTime.Now
        Return String.Format("{0}-{1:000}-{2:000}.eml",
                            currentDateTime.ToString("yyyyMMddHHmmss", New CultureInfo("en-US")),
                            currentDateTime.Millisecond,
                            sequence)
    End Function

    Sub Main()

        Try
            ' Create a folder named "inbox" under current directory
            ' to save the email retrieved.
            Dim localInbox As String = String.Format("{0}\inbox", Directory.GetCurrentDirectory())

            ' If the folder is not existed, create it.
            If Not Directory.Exists(localInbox) Then
                Directory.CreateDirectory(localInbox)
            End If

            ' Please use domain\user or full email address as the user name
            Dim oServer As New MailServer("exch.emailarchitect.net",
                        "tester@emailarchitect.net",
                        "testpassword",
                        ServerProtocol.ExchangeEWS)

            ' By default, Exchange Web Service (EWS) requires SSL connection
            ' Please ignore Port property for EWS and WebDAV protocol
            oServer.SSLConnection = True

            Console.WriteLine("Connecting server ...")

            Dim oClient As New MailClient("TryIt")
            oClient.Connect(oServer)

            Dim infos As MailInfo() = oClient.GetMailInfos()
            Console.WriteLine("Total {0} email(s)", infos.Length)

            For i As Integer = 0 To infos.Length - 1
                Dim info As MailInfo = infos(i)
                Console.WriteLine("Index: {0}; Size: {1}; UIDL: {2}",
                        info.Index, info.Size, info.UIDL)

                ' Retrieve email from Exchange server
                Dim oMail As Mail = oClient.GetMail(info)

                Console.WriteLine("From: {0}", oMail.From.ToString())
                Console.WriteLine("Subject: {0}" & vbCr & vbLf, oMail.Subject)

                ' Generate an unqiue email file name based on date time.
                Dim fileName As String = _generateFileName(i + 1)
                Dim fullPath As String = String.Format("{0}\{1}", localInbox, fileName)

                ' Save email to local disk
                oMail.SaveAs(fullPath, True)

                ' Mark email as deleted from Exchange server.
                oClient.Delete(info)

            Next

            ' Quit and expunge emails marked as deleted from Exchange server.
            oClient.Quit()
            Console.WriteLine("Completed!")

        Catch ep As Exception
            Console.WriteLine(ep.Message)
        End Try

    End Sub
End Module

Imports System.Globalization
Imports System.Text
Imports System.IO
Imports EAGetMail 'imports EAGetMail namespace

Module Module1

    ' if you want to search sub folder, use parentfolder\subfolder as folderPath
    ' for example: inbox\mysubfolder
    Function FindFolder(ByVal folderPath As String, ByRef folders As Imap4Folder()) As Imap4Folder
        For i As Integer = 0 To folders.Length - 1
            Dim folder As Imap4Folder = folders(i)
            ' Folder was found.
            If String.Compare(folder.LocalPath, folderPath, True) = 0 Then
                Return folder
            End If

            folder = FindFolder(folderPath, folder.SubFolders)
            If Not (folder Is Nothing) Then
                Return folder
            End If
        Next

        ' No folder found
        Return Nothing
    End Function

    Function _generateFileName(ByVal sequence As Integer) As String
        Dim currentDateTime As DateTime = DateTime.Now
        Return String.Format("{0}-{1:000}-{2:000}.eml",
                            currentDateTime.ToString("yyyyMMddHHmmss", New CultureInfo("en-US")),
                            currentDateTime.Millisecond,
                            sequence)
    End Function

    Sub Main()

        Try
            ' Create a folder named "inbox" under current directory
            ' to save the email retrieved.
            Dim localInbox As String = String.Format("{0}\inbox", Directory.GetCurrentDirectory())

            ' If the folder is not existed, create it.
            If Not Directory.Exists(localInbox) Then
                Directory.CreateDirectory(localInbox)
            End If

            ' Please use domain\user or full email address as the user name
            Dim oServer As New MailServer("exch.emailarchitect.net",
                        "tester@emailarchitect.net",
                        "testpassword",
                        ServerProtocol.ExchangeEWS)

            ' By default, Exchange Web Service (EWS) requires SSL connection
            ' Please ignore Port property for EWS and WebDAV protocol
            oServer.SSLConnection = True

            Console.WriteLine("Connecting server ...")

            Dim oClient As New MailClient("TryIt")
            oClient.Connect(oServer)

            ' Lookup folder based on path.
            Dim folder As Imap4Folder = FindFolder("Deleted Items", oClient.GetFolders())
            If folder Is Nothing Then
                Throw New Exception("Folder was not found")
            End If

            ' Select this folder
            oClient.SelectFolder(folder)

            Dim infos As MailInfo() = oClient.GetMailInfos()
            Console.WriteLine("Total {0} email(s)", infos.Length)

            For i As Integer = 0 To infos.Length - 1
                Dim info As MailInfo = infos(i)
                Console.WriteLine("Index: {0}; Size: {1}; UIDL: {2}",
                        info.Index, info.Size, info.UIDL)

                ' Retrieve email from Exchange server
                Dim oMail As Mail = oClient.GetMail(info)

                Console.WriteLine("From: {0}", oMail.From.ToString())
                Console.WriteLine("Subject: {0}" & vbCr & vbLf, oMail.Subject)

                ' Generate an unqiue email file name based on date time.
                Dim fileName As String = _generateFileName(i + 1)
                Dim fullPath As String = String.Format("{0}\{1}", localInbox, fileName)

                ' Save email to local disk
                oMail.SaveAs(fullPath, True)

                ' Mark email as deleted from Exchange server.
                oClient.Delete(info)

            Next

            ' Quit and expunge emails marked as deleted from Exchange server.
            oClient.Quit()
            Console.WriteLine("Completed!")

        Catch ep As Exception
            Console.WriteLine(ep.Message)
        End Try

    End Sub
End Module