Best IT MSP · Buyer's Guide
Business email security protects against the attacks that arrive by email, phishing, business email compromise (BEC), malware, and account takeover, which are the entry point for most breaches. Modern email security combines filtering, authentication, AI threat detection, and user training to stop threats before they reach the inbox.
Email security is the practice and set of tools that protect your email from cyber threats. It matters more than any other single control because email is the front door for attacks: it is how most phishing, malware, and fraud reach your people. With reported cybercrime losses topping $16 billion in a year[1] and most breaches involving a human element[2], the inbox is where defense starts.
Email security is a core part of broader cybersecurity services, and it protects the Microsoft 365 and Google Workspace accounts most businesses run on.
Strong email security increasingly uses AI and machine learning to identify and block threats before they reach an employee's inbox, with fast post-delivery remediation when something slips through. Look for high real-world phishing detection, automated remediation across all mailboxes, low administrative overhead for your team, and clear reporting. Built-in protection in Microsoft 365 is a baseline, not a complete solution; most businesses layer a dedicated email security service on top.
Shortlist three, ask each the same questions, and compare. To start from a vetted, merit-ranked list, browse providers by city in the Best IT MSP directory.