What it is
Email security is the filter and policy layer in front of the inbox: spam, phishing, impersonation, malware in attachments, and outbound rules that stop a compromised mailbox from mailing the rest of the company's contacts.
ExampleWhat it looks like
A look-alike "invoice" from a vendor domain is quarantined before anyone clicks, and a compromised mailbox cannot auto-forward to an attacker in another country.
How we handle it
WolfTech puts a real email security layer in front of Microsoft 365, then watches the quarantine with the client so the filter is tuned instead of ignored.