2-DisableDatabaseMail.ps1

<#
    .EXAMPLE
        This example will remove the mail profile and the mail account and
        disable Database Mail on a SQL Server instance.

#>
$ConfigurationData = @{
    AllNodes = @(
        @{
            NodeName                    = 'localhost'
            ServerName                  = $env:COMPUTERNAME
            InstanceName                = 'DSCSQL2016'

            MailServerName              = 'mail.company.local'
            AccountName                 = 'MyMail'
            ProfileName                 = 'MyMailProfile'
            EmailAddress                = 'NoReply@company.local'
            Description                 = 'Default mail account and profile.'
            LoggingLevel                = 'Normal'
            TcpPort                     = 25

            <#
                NOTE! THIS IS NOT RECOMMENDED IN PRODUCTION.
                This is added so that AppVeyor automatic tests can pass, otherwise
                the tests will fail on passwords being in plain text and not being
                encrypted. Because it is not possible to have a certificate in
                AppVeyor to encrypt the passwords we need to add the parameter
                'PSDscAllowPlainTextPassword'.
                NOTE! THIS IS NOT RECOMMENDED IN PRODUCTION.
            #>
            PSDscAllowPlainTextPassword = $true
        }
    )
}

Configuration Example
{
    param
    (
        [Parameter(Mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [System.Management.Automation.PSCredential]
        $SqlInstallCredential
    )

    Import-DscResource -ModuleName 'SqlServerDsc'

    node localhost {
        SqlServerDatabaseMail 'DisableDatabaseMail'
        {
            Ensure               = 'Absent'
            ServerName           = $Node.ServerName
            InstanceName         = $Node.InstanceName
            AccountName          = $Node.AccountName
            ProfileName          = $Node.ProfileName
            EmailAddress         = $Node.EmailAddress
            MailServerName       = $Node.MailServerName

            PsDscRunAsCredential = $SqlInstallCredential
        }

        <#
            Don't disable the Database Mail XPs if there are still mail accounts
            left configured.
        #>
        SqlServerConfiguration 'DisableDatabaseMailXPs'
        {

            ServerName     = $Node.ServerName
            InstanceName   = $Node.InstanceName
            OptionName     = 'Database Mail XPs'
            OptionValue    = 0
            RestartService = $false
        }
    }
}