如何高效存储所有用户的Outlook收件箱规则Identity信息？

直接用JSON格式把所有用户的规则Identity集中存储到单个文件，既能解决文件泛滥的问题，也方便后续读取对比。以下是具体实现代码和说明：

1. 收集所有用户规则Identity并保存为JSON #

# 获取所有邮箱用户（可按需过滤，比如指定OU：Get-Mailbox -OrganizationalUnit "OU=Users,DC=domain,DC=com"）
$allUsers = Get-Mailbox -ResultSize Unlimited

# 初始化哈希表，键为用户名，值为该用户的规则Identity数组
$userRulesMap = @{}

foreach ($user in $allUsers) {
    $mailbox = $user.Name
    # 提取该用户所有收件箱规则的Identity属性
    $ruleIdentities = Get-InboxRule -Mailbox $mailbox | Select-Object -ExpandProperty Identity
    $userRulesMap[$mailbox] = $ruleIdentities
}

# 转换为JSON并保存到单个文件（-Depth 10确保嵌套结构正常转换）
$userRulesMap | ConvertTo-Json -Depth 10 | Out-File -Path "C:\Temp\AllUserInboxRuleIdentities.json" -Encoding UTF8

2. 读取JSON文件并对比规则变化 #

# 读取历史JSON数据，转换为PowerShell对象
$oldRuleData = Get-Content -Path "C:\Temp\AllUserInboxRuleIdentities.json" -Raw | ConvertFrom-Json

# 获取当前所有用户的规则Identity（和收集代码逻辑一致）
$allUsers = Get-Mailbox -ResultSize Unlimited
$currentRuleData = @{}

foreach ($user in $allUsers) {
    $mailbox = $user.Name
    $currentRuleData[$mailbox] = Get-InboxRule -Mailbox $mailbox | Select-Object -ExpandProperty Identity
}

# 逐个用户对比规则变化
foreach ($userName in $allUsers.Name) {
    Write-Host "=== 用户 $userName 的规则对比结果 ==="
    $oldIds = $oldRuleData.$userName
    $currentIds = $currentRuleData[$userName]

    # 找出新增的规则Identity
    $addedIds = Compare-Object -ReferenceObject $oldIds -DifferenceObject $currentIds -PassThru | Where-Object { $_.SideIndicator -eq "=>" }
    if ($addedIds) {
        Write-Host "新增规则Identity:"
        $addedIds
    } else {
        Write-Host "无新增规则"
    }

    # 找出删除的规则Identity
    $removedIds = Compare-Object -ReferenceObject $oldIds -DifferenceObject $currentIds -PassThru | Where-Object { $_.SideIndicator -eq "<=" }
    if ($removedIds) {
        Write-Host "删除规则Identity:"
        $removedIds
    } else {
        Write-Host "无删除规则"
    }
    Write-Host "`n"
}

额外说明 #

• JSON文件是结构化文本，既可以用PowerShell快速解析，也能手动打开查看，管理成本远低于大量TXT文件
• 若用户数量较多，建议给Get-InboxRule添加try/catch错误处理，避免单个用户的异常导致脚本中断
• 可根据实际需求调整JSON文件的保存路径和文件名

内容的提问来源于stack exchange，提问作者Vurdalag