如何在XML配置文件中添加多收件人并通过PowerShell脚本发送邮件

WARNING: Exception calling "Send" with "4" argument(s): "An invalid character was found in the mail header: ','."
该报错是由于Net.Mail.SmtpClient.Send()方法的收件人参数不支持逗号分隔的多邮箱格式，仅支持分号分隔的邮箱字符串，或邮箱地址数组，你在XML中用逗号分隔多个收件人时，直接传入就会触发邮件头非法字符校验错误。

仅需修改smtpsettings中to字段的赋值逻辑即可，完全保留原有代码、实现逻辑和XML配置规则，改动量极小：

# Create email content
$smtpsettings = @{
    # 仅新增逗号转分号的逻辑，其余配置完全不变
    to = $ConfigFile.Settings.EmailSettings.MailTo.Replace(',', ';')
    from = $ConfigFile.Settings.EmailSettings.MailFrom
    subject = "TEST EMAIL"
    smtpServer = $ConfigFile.Settings.EmailSettings.SMTPServer
}

如果偏好数组传参的规范写法，也可以替换为如下逻辑，效果完全一致：

to = $ConfigFile.Settings.EmailSettings.MailTo -split ','

内容的提问来源于stack exchange，提问作者Siddhartha Das