Best Cloud Email Security in 2026

Mailprotector

Mailprotector is aimed at managed service providers seeking email security and management products for their customers.

It suits hosting providers running mail at scale, especially those managing multiple customer domains.

SpamHero suits organizations that want cloud filtering in front of a domain’s mail server, including Microsoft 365 or Google Workspace users.

Sophos Email suits organizations seeking email threat defense, data loss prevention, encryption, and user-awareness features.

Darktrace / EMAIL

It suits security teams protecting organizational email and reducing SOC investigations.

Mailinblack Protect

Protect suits companies, public administrations, and healthcare institutions seeking managed email threat filtering.