PowerShell使用Send-MailMessage发邮件报错修复与代码简化求助

数据老陈

2026-10-1

PowerShell Send-MailMessage 发送Office365邮件修复方案

报错根因说明

首次Credential转换报错：Send-MailMessage的-Credential参数仅接受PSCredential类型对象，原代码传入System.Net.NetworkCredential类型不匹配
二次STARTTLS报错：Office365 SMTP 587端口强制要求TLS加密，原代码未添加-UseSsl参数开启加密
其他语法问题：Attachments参数前缺少破折号、-Port参数值错误加引号、函数定义名与调用名不匹配、多余Workflow包装（普通函数即可满足需求）

优化后可运行代码

使用参数 splatting 写法更简洁易维护，完全对齐原有Net.Mail版本的功能：

function Send-Mail {
    "Sending Email"

    # 读取预生成的加密密码构建合法凭证
    $emailPassword = Get-Content "C:\scriptfolder\password.txt" | ConvertTo-SecureString
    $emailCredential = [System.Management.Automation.PSCredential]::new("sender@domain.com", $emailPassword)

    # 邮件参数配置
    $mailConfig = @{
        From = "sender@domain.com"
        To = "user1@domain.com"
        Cc = "user2@domain.com", "user3@domain.com"
        Subject = "***TEST***"
        Body = "***TEST****"
        Attachments = "替换为实际附件的绝对路径"
        DeliveryNotificationOption = "OnSuccess", "OnFailure"
        SmtpServer = "smtp.office365.com"
        Port = 587
        UseSsl = $true
        Credential = $emailCredential
    }

    Send-MailMessage @mailConfig
    "Email Sent"
}

# 调用发送函数
Send-Mail