{"question": "best email security gateways for small businesses", "category": "email-security-gateways", "category_name": "email security gateways", "audience": "small-businesses", "audience_name": "small businesses", "engine": "Claude (Anthropic) with web search", "model": "claude-opus-5", "asked_at": "2026-10-12T00:28:31Z", "permalink": "https://bikoosh.com/answers/s/email-security-gateways-small-businesses-2026-10-12", "question_page": "https://bikoosh.com/answers/q/email-security-gateways/small-businesses", "brands_named": [{"position": 1, "brand": "Microsoft", "label": "mentioned"}, {"position": 2, "brand": "Microsoft 365", "label": "mentioned"}, {"position": 3, "brand": "Google", "label": "mentioned"}, {"position": 4, "brand": "Google Workspace", "label": "mentioned"}, {"position": 5, "brand": "Microsoft Defender", "label": "mentioned"}, {"position": 6, "brand": "Defender", "label": "mentioned"}, {"position": 7, "brand": "Plan 1", "label": "mentioned"}, {"position": 8, "brand": "IRONSCALES", "label": "mentioned"}, {"position": 9, "brand": "Abnormal", "label": "mentioned"}, {"position": 10, "brand": "Check", "label": "mentioned"}, {"position": 11, "brand": "Avanan", "label": "mentioned"}, {"position": 12, "brand": "Slack", "label": "mentioned"}, {"position": 13, "brand": "SharePoint", "label": "mentioned"}, {"position": 14, "brand": "Proofpoint Essentials", "label": "mentioned"}, {"position": 15, "brand": "Barracuda", "label": "mentioned"}, {"position": 16, "brand": "Guardz", "label": "mentioned"}, {"position": 17, "brand": "Mimecast", "label": "mentioned"}], "sources_cited": [{"url": "https://costbench.com/best/email-security-small-business", "domain": "costbench.com", "source_type": "other"}, {"url": "https://consilien.com/news/best-email-security-solutions-small-business-2026", "domain": "consilien.com", "source_type": "other"}, {"url": "https://www.checkpoint.com/cyber-hub/tools-vendors/top-api-based-email-security-solutions/", "domain": "checkpoint.com", "source_type": "other"}, {"url": "https://anm.com/blog/microsoft-365-pricing-feature-updates-coming-july-1-2026-what-it-means-for-you/", "domain": "anm.com", "source_type": "other"}, {"url": "https://costbench.com/software/email-security/microsoft-defender-for-office-365", "domain": "costbench.com", "source_type": "other"}, {"url": "https://www.costbench.com/compare/mimecast-vs-proofpoint/", "domain": "costbench.com", "source_type": "other"}, {"url": "https://www.trustradius.com/compare-products/mimecast-email-security-cloud-integrated-vs-proofpoint-essentials-for-small-business", "domain": "trustradius.com", "source_type": "review"}, {"url": "https://ironscales.com/glossary/secure-email-gateway", "domain": "ironscales.com", "source_type": "vendor"}], "answer_text": "## Short version first\n\nFor a small business on Microsoft 365 or Google Workspace, you probably don't want a classic *gateway* (the kind where you repoint your MX records). The market has moved to API-based tools that plug into your tenant in minutes, scan internal mail too, and don't advertise to attackers which vendor you use via a public MX lookup. I'd layer one of those on top of what's already built into your mail platform.\n\n**The ones I'd actually name, in order:**\n\n1. **Microsoft Defender for Office 365 (Plan 1)** - start here if you're on M365, because you may already own it. It's roughly $2/user/mo as an add-on, and from July 2026 it's bundled into E3 rather than sold separately, so check your licensing before you buy anything else. Safe Links, Safe Attachments, anti-phishing. Not best-in-class against business email compromise, but it's the cheapest meaningful baseline and it's the thing most SMBs are leaving switched off.\n\n2. **IRONSCALES** - my default *add-on* pick for a 10-200 person company. AI phishing detection, transparent per-user pricing, and a genuinely fast M365 setup. Its differentiator is user-facing: employees get banners and a one-click report button, and ", "answer_truncated": true, "measurement": "One answer from one engine on one date. Not a ranking and not a claim about the world; brands the engine did not name are not recorded.", "limitation": "Coverage: Claude (Anthropic) with web search. Other engines not included.", "alerts": {"name": "Answer Watch Pro", "price_usd": 79, "period": "month", "gets": "daily change alerts for up to 5 brands in what one AI answer engine says, history, CSV export. Coverage: Claude (Anthropic) with web search. Other engines not included", "url": "https://bikoosh.com/answers"}}