Unfortunately we currently do not implement any other spam protection. Will surely implement some other options in next release. Till then we recommend you the following:
1. Set “Auto Approve” to “false”.
2. Set “admin_email_alert” to “false”.
3. Just check your website admin panel for new testimonials once or twice a week. On that time delete all spam testimonials and approve the genuine ones.
Sorry for the inconvenience.
