Imports System.Net.Mail
Public Class ClassEmail
    Private Shared MailSSL As Boolean = False
    Public Shared Function Send_EMail(MailEmpfaenger As String, MailBetreff As String, vBody As String, MAIL_SMTP As String, MAIL_USER As String, MAIL_PW As String, MAIL_FROM As String, port As Integer)
        '#### E-MAIL NACHRICHT VERSENDEN
        Try
            If MAIL_SMTP <> "" And MAIL_USER <> "" Then
                Dim empfaenger As String()
                If MailEmpfaenger.Contains(";") Then
                    empfaenger = MailEmpfaenger.Split(";")
                Else
                    ReDim Preserve empfaenger(0)
                    empfaenger(0) = MailEmpfaenger
                End If
                'Für jeden Empfänger eine Neue Mail erzeugen
                For Each _mailempfaenger As String In empfaenger
                    'Neue Nachricht erzeugen: 
                    Dim message As New MailMessage(MAIL_FROM, Trim(_mailempfaenger), MailBetreff, _
                                                             "<font face=""Tahoma"">" & vBody & "<br>" & _
                                                             "<br>Time: " & My.Computer.Clock.LocalTime.ToShortDateString & "-" & _
                                                             My.Computer.Clock.LocalTime.ToLongTimeString & "</font>")
                    ' create and add the attachment(s) */
                    ' Dim Attachment As Attachment = New Attachment("E:\test\Frachkostenreport.txt")
                    'message.Attachments.Add(Attachment)
                    With message
                        .IsBodyHtml = True
                    End With

                    'Einen SMTP Client erzeugen und Anmeldungsinformationen hinterlegen
                    Dim emailClient As New SmtpClient(MAIL_SMTP)
                    emailClient.EnableSsl = MailSSL
                    'Email mit Authentifizierung
                    Dim SMTPUserInfo As New System.Net.NetworkCredential(MAIL_USER, MAIL_PW) ', My.Settings.vDomain)
                    emailClient.UseDefaultCredentials = False
                    emailClient.Credentials = SMTPUserInfo
                    emailClient.Port = port
                    '*Send the message */
                    emailClient.Send(message)
                Next
                Return True
            End If
            Return True
        Catch ex As Exception
            MsgBox("Error in Send Email: " & vbNewLine & ex.Message, MsgBoxStyle.Critical)
            Return False
        End Try
    End Function
    Public Function Send_Log_Mail(ByVal vBody As String, ByVal vBetreff As String, ByVal emailfrom As String, ByVal emailsmtp As String, ByVal emailuser As String, ByVal emailpw As String, ByVal email_empf As String)
        '#### E-MAIL NACHRICHT VERSENDEN
        Try
            Dim empfaenger As String()
            If email_empf.Contains(";") Then
                empfaenger = email_empf.Split(";")
            Else
                ReDim Preserve empfaenger(0)
                empfaenger(0) = email_empf
            End If
            'Für jeden Empfänger eine Neue Mail erzeugen
            For Each _mailempfaenger As String In empfaenger
                ' Neue Nachricht erzeugen: 
                Dim message As New MailMessage(emailfrom, _mailempfaenger, vBetreff & " - Domain: " & Environment.UserDomainName, _
                                               "<font face=""Arial"">" & vBody & "<br>>> Version: " & My.Application.Info.Version.ToString & "<br>>> Maschine: " & Environment.MachineName & "<br>" & "<br>>> Domain-Name: " & Environment.UserDomainName & "<br>" & _
                                               "<br>>> Gesendet am: " & My.Computer.Clock.LocalTime.ToShortDateString & " " & _
                                               My.Computer.Clock.LocalTime.ToLongTimeString & "</font>")
                ' create and add the attachment(s) */
                Dim logfile = ClassLogger.logDateiname
                If logfile Is Nothing Then
                    MsgBox("Logging was not initiated", MsgBoxStyle.Exclamation)
                    Return False
                End If

                If logfile.Contains("\\") Then
                    logfile = logfile.Replace("\\", "\")
                End If
                If IO.File.Exists(logfile) Then
                    Dim Attachment As Attachment = New Attachment(logfile)
                    message.Attachments.Add(Attachment)
                End If

                With message
                    .IsBodyHtml = True
                    .Priority = MailPriority.High
                End With

                'Einen SMTP Client erzeugen und Anmeldungsinformationen hinterlegen
                Dim emailClient As New SmtpClient(emailsmtp)
                'Email mit Authentifizierung
                Dim SMTPUserInfo As New System.Net.NetworkCredential(emailuser, emailpw) ', My.Settings.vDomain)
                emailClient.UseDefaultCredentials = False
                emailClient.Credentials = SMTPUserInfo
                emailClient.Port = 25

                '*Send the message */
                emailClient.Send(message)

                'ClassLogger.Add(">> Support/Log Email erfolgreich an " & _mailempfaenger & " versendet!", False)
            Next
            Return True
        Catch ex As Exception
            MsgBox("Error in Send LogMail: " & vbNewLine & ex.Message, MsgBoxStyle.Critical)
            Return False
        End Try
    End Function
End Class