# Rspamd vs SpamTitan for Office 365: side-by-side comparison (2026)

[Rspamd](https://cybersectools.com/tools/rspamd) is a free [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution. [SpamTitan for Office 365](https://cybersectools.com/tools/spamtitan-for-office-365) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [SpamTitan (TitanHQ)](https://cybersectools.com/companies/spamtitan-titanhq). 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

| | Rspamd | SpamTitan for Office 365 |
|---|---|---|
| Pricing model | Free | Commercial |
| Category | Email Security Platforms | Email Security Platforms |
| Verified | No | No |
| Deployment type | On-Premises | Hybrid |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| GitHub stars | 2,396 | – |
| Last commit | Mar 2026 | – |
| Company | – | SpamTitan (TitanHQ) |
| Headquarters | – | – |

### Use cases and capabilities

| | Rspamd | SpamTitan for Office 365 |
|---|---|---|
| UDP | Yes | – |
| Spam Prevention | Yes | Yes |
| Microsoft 365 | – | Yes |
| Zero Day | – | Yes |
| Content Filtering | – | Yes |
| Multi Tenancy | – | Yes |

### Core features

**Rspamd**

No features listed.

**SpamTitan for Office 365**

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

### Integrations

**Rspamd**

No integrations listed.

**SpamTitan for Office 365**

3 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.

- [Rspamd](https://cybersectools.com/tools/rspamd) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product.
- [SpamTitan for Office 365](https://cybersectools.com/tools/spamtitan-for-office-365) fits if you need both cloud and on-premises options.

## Rspamd vs SpamTitan for Office 365 FAQ

Common questions when comparing Rspamd vs SpamTitan for Office 365 for email security platforms.

### What is the difference between Rspamd and SpamTitan for Office 365?

**Rspamd**: Rspamd is an advanced spam filtering system and email processing framework that evaluates messages using multiple analysis methods and integrates with MTAs for high-volume email processing.

**SpamTitan for Office 365**: Email security layer for M365 with anti-phishing, sandboxing, and DLP, built by SpamTitan (TitanHQ).

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

### Who makes Rspamd and SpamTitan for Office 365?

**Rspamd** is open-source with 2,396 GitHub stars. **SpamTitan for Office 365** is made by SpamTitan (TitanHQ). The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Rspamd a good alternative to SpamTitan for Office 365?

Often, yes. Rspamd and SpamTitan for Office 365 are both Email Security Platforms products, and both cover Spam Prevention. Key differences: Rspamd is Free while SpamTitan for Office 365 is Commercial, Rspamd is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Rspamd vs Bitdefender GravityZone Security for Exchange](https://cybersectools.com/compare/rspamd-vs-bitdefender-gravityzone-security-for-exchange)
- [Rspamd vs TitanHQ Cybersecurity Bundles](https://cybersectools.com/compare/rspamd-vs-titanhq-cybersecurity-bundles)
- [Rspamd vs ID Agent Graphus](https://cybersectools.com/compare/id-agent-graphus-vs-rspamd)
- [SpamTitan for Office 365 vs Bitdefender GravityZone Security for Exchange](https://cybersectools.com/compare/bitdefender-gravityzone-security-for-exchange-vs-spamtitan-for-office-365)
- [SpamTitan for Office 365 vs TitanHQ Cybersecurity Bundles](https://cybersectools.com/compare/spamtitan-for-office-365-vs-titanhq-cybersecurity-bundles)
- [SpamTitan for Office 365 vs ID Agent Graphus](https://cybersectools.com/compare/id-agent-graphus-vs-spamtitan-for-office-365)

## Alternatives to each

- [See all Rspamd alternatives](https://cybersectools.com/alternatives/rspamd)
- [See all SpamTitan for Office 365 alternatives](https://cybersectools.com/alternatives/spamtitan-for-office-365)

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Source: https://cybersectools.com/compare/rspamd-vs-spamtitan-for-office-365

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

More on Rspamd and SpamTitan for Office 365: 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