由于签名一般都有特殊格式，所以在access中直接加入文本签名是不可行的，那么就只能考虑其他方式了：

1、从特定位置找到签名文件，然后用VBA读取后，传递给Outlook对象；

2、在新邮件阶段，读取默认的签名，然后将HTML格式的字符串保存到String变量中，在正文处理完毕后，将body和保存了HTML格式的变量连接起来，赋值给HTMLBody。

这里选择第2中方式来实现，这个方法的前提是在Outlook中设置了新邮件的默认签名

代   码:

Public Function OutlookSendEmail(ToAddress As String, Subject As String, Body As String, Optional Attachment As String = "", Optional CC As String = "", Optional BCC As String = "", Optional EmailPreview As Boolean = False)
    Dim objOutlook As outlook.Application
    Dim objMail As MailItem
    
    Set objOutlook = New outlook.Application
    Set objMail = objOutlook.CreateItem(olMailItem)
    Dim strSignature As String
    
    With objMail
        .Display
        strSignature = .HTMLBody
        .To = ToAddress        '收件人
        .CC = CC      '抄送
        .BCC = BCC      '密件抄送
        .Subject = Subject        '标题
        .Body = Body           '正文
        .HTMLBody = .HTMLBody & vbCrLf & strSignature
        If Attachment <> "" Then .Attachments.Add Attachment  '附件
        If Not EmailPreview Then .Send                        '发送

    End With
    
    MsgBox "发送成功！"

End Function