Troubleshooting is very simple because you can see where the email was not delivered and why it would be considered as spam.
Fortinet FortiMail offers anti-spam, antivirus, sender reputation, and phishing prevention, praised for stability and integration with FortiGate. Its scalability suits varied enterprises. Support is well-regarded, but response time can improve. Frequent updates may cause downtime, and deployment poses challenges for some users. Suggestions include a more affordable pricing policy and a grace period post-subscription expiry to prevent disruptions. Despite these, it remains a reliable choice for large environments.