{"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": "2026-10-05T21:35:04Z", "permalink": "https://bikoosh.com/answers/s/email-security-gateways-small-businesses-2026-10-05", "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": "Microsoft 365 Business", "label": "mentioned"}, {"position": 9, "brand": "Microsoft 365 Business Premium", "label": "mentioned"}, {"position": 10, "brand": "SharePoint", "label": "mentioned"}, {"position": 11, "brand": "Abnormal", "label": "mentioned"}, {"position": 12, "brand": "Avanan", "label": "mentioned"}, {"position": 13, "brand": "IRONSCALES", "label": "mentioned"}, {"position": 14, "brand": "Barracuda", "label": "mentioned"}, {"position": 15, "brand": "Proofpoint Essentials", "label": "mentioned"}, {"position": 16, "brand": "Mimecast", "label": "mentioned"}, {"position": 17, "brand": "Material", "label": "mentioned"}], "sources_cited": [{"url": "https://learn.microsoft.com/en-us/defender-office-365/mdo-about", "domain": "learn.microsoft.com", "source_type": "vendor"}, {"url": "https://blog.ciaops.com/2025/05/20/microsoft-defender-for-office-365-plan-1-vs-plan-2-comparison-and-smb-implementation-guide/", "domain": "blog.ciaops.com", "source_type": "other"}, {"url": "https://costbench.com/compare/abnormal-security-vs-proofpoint/", "domain": "costbench.com", "source_type": "other"}, {"url": "https://costbench.com/compare/avanan-vs-mimecast/", "domain": "costbench.com", "source_type": "other"}, {"url": "https://tr-web.dev.trustradius.com/compare-products/barracuda-email-protection-vs-ironscales", "domain": "tr-web.dev.trustradius.com", "source_type": "review"}, {"url": "https://consilien.com/news/best-email-security-solutions-small-business-2026", "domain": "consilien.com", "source_type": "other"}, {"url": "https://www.barracuda.com/products/email-protection/barracuda-vs-proofpoint", "domain": "barracuda.com", "source_type": "other"}, {"url": "https://www.selecthub.com/email-security-software/proofpoint-essentials-vs-barracuda-email-protection/", "domain": "selecthub.com", "source_type": "other"}, {"url": "https://trustradius.com/compare-products/proofpoint-email-protection-vs-proofpoint-essentials-for-small-business", "domain": "trustradius.com", "source_type": "review"}, {"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://www.g2.com/categories/secure-email-gateway/small-business", "domain": "g2.com", "source_type": "review"}], "answer_text": "## First, a framing point that saves money\n\nThe classic \"secure email gateway\" - the kind where you change your MX record and route all mail through a third party - is mostly a legacy architecture now if you're on Microsoft 365 or Google Workspace. The modern SMB answer is usually **native filtering + an API-based layer on top** (the category analysts call ICES). It deploys in hours instead of weeks, doesn't break your mail flow, and catches the thing that actually drains small-business bank accounts: business email compromise and vendor invoice fraud, which don't contain malware or bad links for a gateway to find.\n\nSo, in the order I'd actually work through them:\n\n**1. Microsoft Defender for Office 365 Plan 1 - start here, you may already own it.**\nIf you're on Microsoft 365 Business Premium, Plan 1 is already included: Safe Links, Safe Attachments, anti-phishing with impersonation detection, plus coverage for Teams/SharePoint/OneDrive. A large share of small businesses buy a third-party gateway while leaving this unconfigured. Turn on the preset security policies first and see what's left. Standalone it's roughly $2-5/user/mo. ([Microsoft Learn](https://learn.microsoft.com/en-us/", "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"}}