我正在使用 system.net.mail 发送电子邮件,如下所示,但它太慢了。发送大约需要一分钟,我的代码有什么问题。我在 backgroundworker_dowork 中调用下面的代码。
[编辑]:是否有更快的替代方案,可能是免费或开源代码
' send the email '
Dim smtp As SmtpClient = New SmtpClient()
Dim mail As New MailMessage()
Dim i As Long = 0
' SMTP settings '
With smtp
.Host = Trim$(sSMTP)
.Port = Trim$(iPort)
.UseDefaultCredentials = False
.Credentials = New System.Net.NetworkCredential(sUserID, sPword)
.EnableSsl = bSSL
End With
' create the mail '
With mail
If sAttachment <> vbNullString Then
.Attachments.Add(New Net.Mail.Attachment(sAttachment))
End If
.From = New MailAddress(sFromEmail, sFromName)
.ReplyTo = New MailAddress(sReplyTo)
.Subject = sSubject
.IsBodyHtml = True
.Body = sMessage
End With
For i = 0 To lstRecipients.Count - 1
mail.To.Add(lstRecipients(i))
Debug.Print(lstRecipients(i))
Try
smtp.Send(mail)
lSent += 1
bwrkMain.ReportProgress(CInt(100 * (i + 1) / iTotalRecipients))
SetStatus("Sent:" & lstRecipients(i))
Catch ex As Exception
bwrkMain.ReportProgress(CInt(100 * (i + 1) / iTotalRecipients))
SetStatus("Not Sent:" & lstRecipients(i))
End Try
mail.To.Clear()
Next