phpformmailer VS GeeTest CAPTCHA

GeeTest protects websites, mobile apps and APIs from bad bot attacks with zero user friction. Its self-learning defense model based on Graph Convolutional Networks and massive volumes of behavioral biometric data collected since 2012 allows GeeTest to identify and mitigate bad bots across all GeeTest-protected sites. By analyzing over 200 parameters, GeeTest dynamic defense model provides its clients with a broader and deeper understanding of bot activities while its superior technology constantly learns and adjusts itself for any emerging threats. As the industry leader in the era of user experience, GeeTest CAPTCHA utilizes gamification to turn CAPTCHA into a fun and effortless experience. At present, GeeTest serves over 290,000 businesses worldwide, processing 1,000,000,000+ requests every day.