functions/Get-DbaDbMailAccount.ps1

function Get-DbaDBMailAccount {
    <#
        .SYNOPSIS
            Gets database mail accounts from SQL Server
 
        .DESCRIPTION
            Gets database mail accounts from SQL Server
 
        .PARAMETER SqlInstance
            The SQL Server instance, or instances.
 
        .PARAMETER SqlCredential
            Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential)
 
        .PARAMETER Account
            Specifies one or more account(s) to get. If unspecified, all accounts will be returned.
 
        .PARAMETER ExcludeAccount
            Specifies one or more account(s) to exclude.
 
        .PARAMETER InputObject
            Accepts pipeline input from Get-DbaDBMail
 
        .PARAMETER EnableException
            By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.
            This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting.
            Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.
 
        .NOTES
            Tags: DatabaseMail, DBMail, mail
            Author: Chrissy LeMaire (@cl), netnerds.net
 
            Website: https://dbatools.io
            Copyright (c) 2018 by dbatools, licensed under MIT
            License: MIT https://opensource.org/licenses/MITIT
 
        .LINK
            https://dbatools.io/Get-DbaDbMailAccount
 
        .EXAMPLE
            PS C:\> Get-DbaDBMailAccount -SqlInstance sql01\sharepoint
 
            Returns DBMail accounts on sql01\sharepoint
 
        .EXAMPLE
            PS C:\> Get-DbaDBMailAccount -SqlInstance sql01\sharepoint -Account 'The DBA Team'
 
            Returns The DBA Team DBMail account from sql01\sharepoint
 
        .EXAMPLE
            PS C:\> Get-DbaDBMailAccount -SqlInstance sql01\sharepoint | Select *
 
            Returns the DBMail accounts on sql01\sharepoint then return a bunch more columns
 
        .EXAMPLE
            PS C:\> $servers = "sql2014","sql2016", "sqlcluster\sharepoint"
            PS C:\> $servers | Get-DbaDBMail | Get-DbaDBMailAccount
 
            Returns the db DBMail accounts for "sql2014","sql2016" and "sqlcluster\sharepoint"
    #>

    [CmdletBinding()]
    param (
        [Alias("ServerInstance", "SqlServer")]
        [DbaInstanceParameter[]]$SqlInstance,
        [Alias("Credential")]
        [PSCredential]$SqlCredential,
        [string[]]$Account,
        [string[]]$ExcludeAccount,
        [Parameter(ValueFromPipeline)]
        [Microsoft.SqlServer.Management.Smo.Mail.SqlMail[]]$InputObject,
        [switch]$EnableException
    )
    process {
        foreach ($instance in $SqlInstance) {
            Write-Message -Level Verbose -Message "Connecting to $instance"
            $InputObject += Get-DbaDBMail -SqlInstance $SqlInstance -SqlCredential $SqlCredential
        }

        if (-not $InputObject) {
            Stop-Function -Message "No servers to process"
            return
        }

        foreach ($mailserver in $InputObject) {
            try {
                $accounts = $mailserver.Accounts

                if ($Account) {
                    $accounts = $accounts | Where-Object Name -in $Account
                }

                If ($ExcludeAccount) {
                    $accounts = $accounts | Where-Object Name -notin $ExcludeAccount

                }

                $accounts | Add-Member -Force -MemberType NoteProperty -Name ComputerName -value $mailserver.ComputerName
                $accounts | Add-Member -Force -MemberType NoteProperty -Name InstanceName -value $mailserver.InstanceName
                $accounts | Add-Member -Force -MemberType NoteProperty -Name SqlInstance -value $mailserver.SqlInstance
                $accounts | Select-DefaultView -Property ComputerName, InstanceName, SqlInstance, ID, Name, DisplayName, Description, EmailAddress, ReplyToAddress, IsBusyAccount, MailServers
            }
            catch {
                Stop-Function -Message "Failure" -ErrorRecord $_ -Continue
            }
        }
    }
}