# KnowBe4 DefendTM Advanced Inbound Email Threat Defense vs PhishingBox KillPhish: side-by-side comparison (2026) [KnowBe4 DefendTM Advanced Inbound Email Threat Defense](https://cybersectools.com/tools/knowbe4-defendtm-advanced-inbound-email-threat-defense) is a commercial [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) solution by [KnowBe4](https://cybersectools.com/companies/knowbe4). [PhishingBox KillPhish](https://cybersectools.com/tools/phishingbox-killphish) is a commercial [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) solution by [PhishingBox](https://cybersectools.com/companies/phishingbox). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | KnowBe4 DefendTM Advanced Inbound Email Threat Defense | PhishingBox KillPhish | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Anti-Phishing | Anti-Phishing | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise | | Company | KnowBe4 | PhishingBox | | Headquarters | – | – | ### Use cases and capabilities | | KnowBe4 DefendTM Advanced Inbound Email Threat Defense | PhishingBox KillPhish | |---|---|---| | Ransomware Prevention | Yes | – | | Microsoft 365 | – | Yes | ### Core features **KnowBe4 DefendTM Advanced Inbound Email Threat Defense** 10 features listed. Sign in on the page to see them. **PhishingBox KillPhish** 10 features listed. Sign in on the page to see them. ### Integrations **KnowBe4 DefendTM Advanced Inbound Email Threat Defense** 3 integrations listed. Sign in on the page to see them. **PhishingBox KillPhish** 4 integrations listed. Sign in on the page to see them. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [PhishingBox KillPhish](https://cybersectools.com/tools/phishingbox-killphish) fits if you are a startup. ## KnowBe4 DefendTM Advanced Inbound Email Threat Defense vs PhishingBox KillPhish FAQ Common questions when comparing KnowBe4 DefendTM Advanced Inbound Email Threat Defense vs PhishingBox KillPhish for Anti-Phishing. ### What is the difference between KnowBe4 DefendTM Advanced Inbound Email Threat Defense and PhishingBox KillPhish? **KnowBe4 DefendTM Advanced Inbound Email Threat Defense**: AI-powered email security detecting phishing attacks missed by traditional tools, built by KnowBe4. **PhishingBox KillPhish**: Email threat scanning and reporting add-in for Microsoft 365 and Google, built by PhishingBox. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes KnowBe4 DefendTM Advanced Inbound Email Threat Defense and PhishingBox KillPhish? **KnowBe4 DefendTM Advanced Inbound Email Threat Defense** is made by KnowBe4. **PhishingBox KillPhish** is made by PhishingBox. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is KnowBe4 DefendTM Advanced Inbound Email Threat Defense a good alternative to PhishingBox KillPhish? Often, yes. KnowBe4 DefendTM Advanced Inbound Email Threat Defense and PhishingBox KillPhish are both Anti-Phishing products. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [KnowBe4 DefendTM Advanced Inbound Email Threat Defense vs Egress Defend](https://cybersectools.com/compare/egress-defend-vs-knowbe4-defendtm-advanced-inbound-email-threat-defense) - [KnowBe4 DefendTM Advanced Inbound Email Threat Defense vs GreatHorn Mailbox Intelligence](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-knowbe4-defendtm-advanced-inbound-email-threat-defense) - [KnowBe4 DefendTM Advanced Inbound Email Threat Defense vs IronVest InboxGuard](https://cybersectools.com/compare/ironvest-inboxguard-vs-knowbe4-defendtm-advanced-inbound-email-threat-defense) - [PhishingBox KillPhish vs Egress Defend](https://cybersectools.com/compare/egress-defend-vs-phishingbox-killphish) - [PhishingBox KillPhish vs GreatHorn Mailbox Intelligence](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-phishingbox-killphish) - [PhishingBox KillPhish vs IronVest InboxGuard](https://cybersectools.com/compare/ironvest-inboxguard-vs-phishingbox-killphish) ## Alternatives to each - [See all KnowBe4 DefendTM Advanced Inbound Email Threat Defense alternatives](https://cybersectools.com/alternatives/knowbe4-defendtm-advanced-inbound-email-threat-defense) - [See all PhishingBox KillPhish alternatives](https://cybersectools.com/alternatives/phishingbox-killphish) --- Source: https://cybersectools.com/compare/knowbe4-defendtm-advanced-inbound-email-threat-defense-vs-phishingbox-killphish For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/knowbe4-defendtm-advanced-inbound-email-threat-defense.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on KnowBe4 DefendTM Advanced Inbound Email Threat Defense and PhishingBox KillPhish: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md