$Username = "user"
$Password = "pass"
$Server = "DESKTOP-SERVER\SQLEXPRESS"
$Database = "ServerName"
$Query = "SELECT TOP 10 * FROM Schema.Table;"
$Format = @()
$QueryResult = Invoke-Sqlcmd -Username $Username -Password $Password -ServerInstance $Server -Database $Database -Query "$Query"

ForEach ($tmp in $QueryResult) {
	$Format = $Format + ($tmp.ItemArray -join ",")
}

$EmailFrom = "iv@gmail.com"
$EmailTo = "iv@gmail.com"
$Subject = "The subject of your email"
$Body = $Format
$SMTPServer = "smtp.gmail.com"
$SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 587)
$SMTPClient.EnableSsl = $true
$SMTPClient.Credentials = New-Object System.Net.NetworkCredential("easy@gmail.com", "easy")
$SMTPClient.Send($EmailFrom, $EmailTo, $Subject, $Body)