'error.upload' => 'Viga faili vastuvõtmisel.',
// TODO: translate the following.
// 'error.range_locked' => 'Date range is locked.',
-// 'error.mail_send' => 'Error sending mail.',
+// 'error.mail_send' => 'Error sending mail. Use MAIL_SMTP_DEBUG for diagnostics.',
// 'error.no_email' => 'No email associated with this login.',
// 'error.uncompleted_exists' => 'Uncompleted entry already exists. Close or delete it.',
// 'error.goto_uncompleted' => 'Go to uncompleted entry.',