By Roman Daneghyan
Global email users are estimated to reach around 4.6 billion in 2025, and digital marketers are reveling in that news. Email marketing continues to be one of the highest ROI [return on investment] communication channels in 2021, and that fact does not seem to change in the near future.In parallel to the promotion opportunities that email marketing gives to digital marketers, many challenges arise regarding security. According to estimations, around 91 percent of cyberattacks start with phishing emails. This, in turn, is increasing the necessity to install a robust security system against cyberattacks.