Phish Protection review

Phish Protection, run by DuoCircle, is one of the few email security services that shows its full price on the website and lets you buy without a sales call. The base fee is $32 per month and covers 10 users, then each additional mailbox costs $1.80 per month, falling to $1.60 at larger volumes, and shared mailboxes cost half. Every plan includes the same features: real-time protection, advanced threat defense with AI-powered URL analysis, time-of-click link checks, attachment sandboxing, display name spoofing detection, blocklists and allowlists, and a reporting dashboard. It works with Microsoft 365, Google Workspace and any mail system that supports standard routing, and support is 24/7 and US based. There is a 60-day free trial with no credit card and no long-term contract. The trade-off is depth: it is a filtering layer rather than an API tool that learns each user's normal behavior, so it is weaker against carefully written BEC with no link or file. For a small office that wants solid phishing filtering on a known budget, it is easy to recommend.

Who it is for

Small businesses that want full anti-phishing features with self-serve monthly pricing and no contract.

Price

$32 per month base fee including 10 users, then from $1.80 per extra user per month.

Base fee: $32/mo (includes 10 users).
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Real-time protection and advanced threat defense with AI-powered URL analysis
• Time-of-click link protection
• Attachment sandboxing
• Display name spoofing detection with blocklists and allowlists
• Works with Microsoft 365, Google Workspace and any platform that supports standard mail routing

Strengths and weaknesses

• Strength: Every plan includes the full feature set, with no feature gating
• Strength: 60-day free trial with no credit card
• Strength: Shared mailboxes billed at 50% of the user rate
• Weakness: Filtering service, so setup changes mail routing rather than connecting by API
• Weakness: No behavioral baselining of senders for payload-free BEC
• Weakness: Annual billing discounts need a sales contact

Key facts

• Per user price: $1.80 per user per month for 1 to 25 users, falling to $1.60 at 501 to 1,000
• Domain aliases: $50 per month each, users at 50% off
• Support: 24/7 US-based
• Contract: None, cancel anytime

Where it ranks

Phish Protection is No. 7 in our Best Email Security Software verdict.