Proofpoint is a cybersecurity company that provides cloud-based email security, data protection, and threat intelligence services.
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Best Retruster Alternatives ranked by AI · updated May 2025
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Retruster is a comprehensive email security software that protects against phishing attacks and email fraud.
Price: Starting at $10 per user per month
🎯 home.retruster.com
Top 6 Retruster alternatives
Barracuda Sentinel is a cloud-based email security service for organizations using Microsoft 365 and other business email platforms. It focuses on spear-phishing,...
Pros
- Strong focus on business email compromise and executive impersonation
- Cloud deployment reduces the need for additional mail gateway infrastructure
- Integrates with Microsoft 365 and can analyze user and mailbox behavior
Cons
- Less suitable than a full secure email gateway for broad content filtering requirements
- Pricing is quote-based and typically aimed at business and enterprise buyers
- Advanced controls may require additional Barracuda products
3
Mimecast offers email security and archiving solutions with a focus on protecting against advanced threats and ensuring data resilience.
Pros
- Advanced threat protection
- Data resilience features
Cons
- Pricing may vary based on feature set
Contact for pricing
ClrStream is a secure email filtering service that protects your inbox from spam, viruses, and malware.
Starting from $5.95 per user per month
Cisco Email Security is a comprehensive email security solution that provides advanced threat protection, data loss prevention, and encryption capabilities.
Contact Cisco for pricing
IRONSCALES is a cloud email security platform focused on phishing, BEC, malware, and account takeover prevention. It combines machine learning, mailbox-level remediation,...
Pros
- Combines automated detection with rapid mailbox remediation
- Strong phishing-reporting workflow for employees and security teams
- Generally simpler to deploy than traditional secure email gateways
Cons
- Less extensive archiving and continuity functionality than Mimecast
- Advanced automation may require careful integration and policy tuning
- Some enterprise reporting features are package-dependent
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