Best The Email Laundry (Legacy) Alternatives ranked by AI · updated Aug 2026

💡 Pick it for the closest modern replacement with stronger email security, continuity, and archiving.

Mimecast offers email security and archiving solutions with a focus on protecting against advanced threats and ensuring data resilience.

💡 Pick it if your organization runs Microsoft 365 and wants integrated phishing and malware protection.

Microsoft Defender for Office 365 is a cloud email security service for Microsoft 365 organizations. It adds anti-spam, anti-malware, phishing protection, Safe...

💡 Pick it when targeted phishing, business email compromise, and outbound data protection matter most.

Proofpoint Email Protection provides advanced threat protection for email, including anti-spam, anti-phishing, and data loss prevention.

💡 Pick it for a practical mix of email filtering, continuity, backup, and account-takeover protection.

Barracuda Email Protection is a cloud service for filtering spam, malware, phishing, and impersonation threats in business email. It also provides email...

💡 Pick it for an all-in-one email security, backup, continuity, and awareness platform.

Hornetsecurity offers cloud-based email security solutions for businesses including spam and virus protection, email encryption, and advanced threat protection.

💡 Pick it if you want a free, open-source gateway and can manage the infrastructure yourself.

Proxmox Mail Gateway is a mail security solution for spam and virus filtering. It provides an easy-to-use web-based interface with quarantine, reports,...