NoSpamProxy
NoSpamProxy: A flexible email gateway for Microsoft and SMTP environments, with filtering, encryption and routing controls. Ranked #11 of 27 in Email Anti-Spam Software by our editors (7.9/10); pricing: Pricing on request; best for microsoft-centric hybrid email environments.
At a glance
- Editor score7.9 / 10
- PricingPricing on request
- Best forMicrosoft-centric hybrid email environments
- Phishing detectionYes
- Facts checked23 Sep 2026
Where it wins
- Filters inbound and outbound email for spam, phishing and malware
- Supports encryption, digitally signed messages and policy-based routing
- Offers cloud and customer-managed deployment options
Where it doesn't
- Pricing requires contacting sales
- Focuses on email security rather than broader security needs
- Administration and quarantine management require vendor management interfaces
Our verdict on NoSpamProxy
NoSpamProxy is an email security platform from Net at Work GmbH for organizations that need to filter and manage business email across Microsoft 365, Microsoft Exchange or SMTP mail servers. It covers inbound and outbound spam filtering, phishing and malware detection, and scanning of attachments. Its cloud and customer-managed options make it relevant to Microsoft-centric hybrid email environments, while the mix of small, mid-market and enterprise fit suggests it is intended for organizations of different sizes.
The product’s breadth within email is a central consideration. Alongside filtering and scanning, it supports email encryption and digitally signed messages, policy-based routing and filtering, and quarantine management. That makes it a fit for teams that want security controls and handling policies in the mail flow, rather than a tool limited to spam detection. Support for Microsoft 365, Exchange and SMTP servers also gives it scope beyond a single mail platform. Organizations seeking protection outside email should consider whether this email-focused scope meets their needs.
Deployment is available as a cloud service or in customer-managed environments, which may suit organizations with a hybrid setup or a preference about where the gateway runs. Administration and quarantine management are provided through the vendor’s management interfaces. According to the vendor’s pricing information, buyers need to contact sales; public plan amounts are not given here. Support channels include email and documentation, and the listed compliance posture includes GDPR. Choose NoSpamProxy if email filtering, encryption and routing across Microsoft or SMTP systems are priorities; look elsewhere if transparent self-serve pricing or broader security coverage is essential.
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NoSpamProxy pricing
NoSpamProxy fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | Not verified |
| Phishing detection | Yes |
| Malware scanning | Yes |
| Attachment scanning | Yes |
| Quarantine access | Not verified |
| Supported mail platforms | Microsoft 365, Microsoft Exchange and SMTP mail servers |
| Quarantine retention | Not verified |
| Deployment type | Cloud_gateway |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Compliance & security | GDPR |
| Support | Email, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 3 integrations: Microsoft 365, Microsoft Exchange, SMTP mail servers See all → |
| Pricing | Pricing on request (source) |
| Website | nospamproxy.de |
| Facts checked | 23 Sep 2026 |
NoSpamProxy integrations
NoSpamProxy lists 3 integrations on its own site.
- Microsoft 365
- Microsoft Exchange
- SMTP mail servers
See all NoSpamProxy integrations →
Alternatives to NoSpamProxy
- Barracuda Message ArchiverA strong email archive for compliance workflows, but not a primary anti-spam filter.9.4
- Symantec IT Management SuiteA broad endpoint management suite, but not a focused email anti-spam product.9.3
- MX GuarddogA low-cost cloud gateway for domain owners who run their own email servers.8.7
See all NoSpamProxy alternatives →
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Featured on iTechGuides
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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