Positive Technologies has introduced PT Knockin, a service for checking the security of corporate e-mail. In just two minutes, it will give a verdict on the effectiveness of the company's email protection tools and offer recommendations on how to eliminate shortcomings. According to Positive Technologies estimates, the market volume of corporate email security tools together with Sandbox and Secure Mail Gateway class solutions occupies 4-5% of the network security market and will amount to at least ₽6-7.5 billion in 2026.