FrozenSpam vs Altospam
Honest comparison between two French anti-spam gateways. Updated May 2026.
One-sentence verdict — Altospam is a French anti-spam gateway installed since 2002, robust, France-hosted. FrozenSpam adds modern challenge-response + outbound auto-WL + transparent pricing + no commitment, for the SMB segment Altospam targets less directly.
Detailed comparison
| Criterion | FrozenSpam | Altospam |
|---|---|---|
| Main mechanism | 5 layers with modern CR | Multi-layer (DNSBL + heuristics) |
| Challenge-response | ✓ with outbound auto-WL | ✘ no CR |
| Outbound auto-whitelist | ✓ native | ≈ statistical learning |
| Backscatter guard | ✓ strict SPF/DMARC | ✓ |
| Public Solo / month | ✓ €4.90 excl. VAT | ✘ quote |
| SMB 10-box annual | ~€468 excl. VAT/year | ~€600-1,000 excl. VAT/year (public estimates) |
| Commitment | None | Annual typical |
| Hosting | France (ACME/OVH) | France |
| Identified author | ✓ Emmanuel Daunizeau | ✘ team |
| Start | €1 first month | Test on request |
| REST API | ✓ OpenAPI 3.1 | ✓ |
What Altospam does better
- French historical presence — Active since 2002, significant install base in SMBs and public sector.
- Mature integrated antivirus — Multi-engine AV combination by default.
- French commercial team — Field presence, strong references in public sector.
What FrozenSpam does better
- Modern challenge-response — Altospam has no CR. Purely heuristic/statistical. FrozenSpam combines both.
- Explicit outbound auto-whitelist — Technical zero false-positive guarantee on your initiations.
- Public pricing.
- No commitment.
- €1 first month — Online self-service start.
- Identified author — You talk to Emmanuel.