# InboxSeguro vs mailspoof: side-by-side comparison (2026)

[InboxSeguro](https://cybersectools.com/tools/inboxseguro) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [InboxSeguro](https://cybersectools.com/companies/inboxseguro). [mailspoof](https://cybersectools.com/tools/mailspoof) is a free [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution. Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Email Security Solutions for Business](https://cybersectools.com/shortlists/best-email-security-platforms) picks Proofpoint Core Email Protection, Microsoft Defender for Office 365, Mimecast Advanced Email Security and 4 more.

## Side-by-side comparison

| | InboxSeguro | mailspoof |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Email Security Platforms | Email Security Platforms |
| Verified | No | No |
| Deployment type | Cloud | On-Premises |
| Company size fit | SMB, Mid-Market, Startup | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | – | 131 |
| Last commit | – | Oct 2020 |
| Company | InboxSeguro | – |
| Headquarters | – | – |

### Use cases and capabilities

| | InboxSeguro | mailspoof |
|---|---|---|
| DMARC | Yes | Yes |
| SPF | Yes | Yes |
| DKIM | Yes | – |
| Spoofing | Yes | Yes |
| DNS Security | Yes | – |
| Alerting | Yes | – |
| Inventory | Yes | – |
| Security Reporting | Yes | – |
| Red Team | – | Yes |
| OSINT | – | Yes |

### Core features

**InboxSeguro**

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

**mailspoof**

No features listed.

### Integrations

**InboxSeguro**

18 integrations listed. Sign in on the page to see them.

**mailspoof**

No integrations listed.

## Which one fits you

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

- [InboxSeguro](https://cybersectools.com/tools/inboxseguro) fits if you want a cloud product.
- [mailspoof](https://cybersectools.com/tools/mailspoof) fits if you need to run it on your own servers, you are an enterprise, you need a free product and you want an open-source product.

## InboxSeguro vs mailspoof FAQ

Common questions when comparing InboxSeguro vs mailspoof for email security platforms.

### What is the difference between InboxSeguro and mailspoof?

**InboxSeguro**: Domain email-sending monitoring with DMARC/SPF/DKIM inventory, alerts and guided DNS. Built by InboxSeguro.

**mailspoof**: A command-line tool that analyzes SPF and DMARC records to identify domains vulnerable to email spoofing attacks.

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

### Who makes InboxSeguro and mailspoof?

**InboxSeguro** is made by InboxSeguro founded in 2026-01-01T00:00:00.000Z. **mailspoof** is open-source with 131 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is InboxSeguro a good alternative to mailspoof?

Often, yes. InboxSeguro and mailspoof are both Email Security Platforms products, and both cover Spoofing, DMARC, SPF. Key differences: InboxSeguro is Commercial while mailspoof is Free, mailspoof is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [InboxSeguro vs Sendmarc DMARC Managed Services](https://cybersectools.com/compare/inboxseguro-vs-sendmarc-dmarc-managed-services)
- [InboxSeguro vs EasyDMARC Email Auth for Gmail, Yahoo & Microsoft](https://cybersectools.com/compare/easydmarc-email-auth-for-gmail-yahoo-and-microsoft-vs-inboxseguro)
- [InboxSeguro vs Mimecast DMARC Analyzer](https://cybersectools.com/compare/inboxseguro-vs-mimecast-dmarc-analyzer)
- [mailspoof vs Sendmarc DMARC Managed Services](https://cybersectools.com/compare/mailspoof-vs-sendmarc-dmarc-managed-services)
- [mailspoof vs EasyDMARC Email Auth for Gmail, Yahoo & Microsoft](https://cybersectools.com/compare/easydmarc-email-auth-for-gmail-yahoo-and-microsoft-vs-mailspoof)
- [mailspoof vs Mimecast DMARC Analyzer](https://cybersectools.com/compare/mailspoof-vs-mimecast-dmarc-analyzer)

## Alternatives to each

- [See all InboxSeguro alternatives](https://cybersectools.com/alternatives/inboxseguro)
- [See all mailspoof alternatives](https://cybersectools.com/alternatives/mailspoof)

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Source: https://cybersectools.com/compare/inboxseguro-vs-mailspoof

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/inboxseguro.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on InboxSeguro and mailspoof: 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