# Attic M365 FREE vs IronVest InboxGuard: side-by-side comparison (2026)

[Attic M365 FREE](https://cybersectools.com/tools/attic-free) is a commercial [anti-phishing](https://cybersectools.com/categories/anti-phishing) solution by [Attic Security](https://cybersectools.com/companies/attic-security). [IronVest InboxGuard](https://cybersectools.com/tools/ironvest-inboxguard) is a commercial [anti-phishing](https://cybersectools.com/categories/anti-phishing) solution by [IronVest](https://cybersectools.com/companies/ironvest). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Attic M365 FREE | IronVest InboxGuard |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Anti-Phishing | Anti-Phishing |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Startup, SMB | Startup, SMB, Mid-Market, Enterprise |
| Company | Attic Security | IronVest |
| Headquarters | – | – |

### Use cases and capabilities

| | Attic M365 FREE | IronVest InboxGuard |
|---|---|---|
| Microsoft | Yes | – |
| Office 365 | Yes | Yes |
| Browser Security | Yes | – |
| Ransomware Prevention | – | Yes |

### Core features

**Attic M365 FREE**

9 features listed. Sign in on the page to see them.

**IronVest InboxGuard**

8 features listed. Sign in on the page to see them.

### Integrations

**Attic M365 FREE**

1 integration listed. Sign in on the page to see them.

**IronVest InboxGuard**

No integrations listed.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [IronVest InboxGuard](https://cybersectools.com/tools/ironvest-inboxguard) fits if you are a mid-market company or an enterprise.

## Attic M365 FREE vs IronVest InboxGuard FAQ

Common questions when comparing Attic M365 FREE vs IronVest InboxGuard for anti-phishing.

### What is the difference between Attic M365 FREE and IronVest InboxGuard?

**Attic M365 FREE**: Protects Microsoft 365 users from phishing attacks using fake login pages. Built by Attic Security.

**IronVest InboxGuard**: AI-powered email security with phishing detection and employee training. Built by IronVest.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Attic M365 FREE and IronVest InboxGuard?

**Attic M365 FREE** is made by Attic Security. **IronVest InboxGuard** is made by IronVest. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Attic M365 FREE a good alternative to IronVest InboxGuard?

Often, yes. Attic M365 FREE and IronVest InboxGuard are both Anti-Phishing products, and both cover Office 365. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Attic M365 FREE vs KnowBe4 DefendTM Advanced Inbound Email Threat Defense](https://cybersectools.com/compare/attic-free-vs-knowbe4-defendtm-advanced-inbound-email-threat-defense)
- [Attic M365 FREE vs Detect-Phish](https://cybersectools.com/compare/attic-free-vs-detect-phish)
- [Attic M365 FREE vs Guardio Safe Browsing](https://cybersectools.com/compare/attic-free-vs-guardio-safe-browsing)
- [IronVest InboxGuard vs KnowBe4 DefendTM Advanced Inbound Email Threat Defense](https://cybersectools.com/compare/ironvest-inboxguard-vs-knowbe4-defendtm-advanced-inbound-email-threat-defense)
- [IronVest InboxGuard vs Detect-Phish](https://cybersectools.com/compare/detect-phish-vs-ironvest-inboxguard)
- [IronVest InboxGuard vs Guardio Safe Browsing](https://cybersectools.com/compare/guardio-safe-browsing-vs-ironvest-inboxguard)

## Alternatives to each

- [See all Attic M365 FREE alternatives](https://cybersectools.com/alternatives/attic-free)
- [See all IronVest InboxGuard alternatives](https://cybersectools.com/alternatives/ironvest-inboxguard)

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Source: https://cybersectools.com/compare/attic-free-vs-ironvest-inboxguard

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More on Attic M365 FREE and IronVest InboxGuard: 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