Best SpamSieve Alternatives in 2026
Updated
20 tools from email anti-spam software ranked against SpamSieve on the same published basis.
- 1SpamSieve vs MailWasher
- 2SpamSieve vs Cleanmail
- 3SpamSieve vs Retarus Transactional Email
- 4SpamSieve vs JetEmail
- 5SpamSieve vs Mailprotector
- 6SpamSieve vs Forcepoint ZTNA
- 7SpamSieve vs Mimecast Data Leak Prevention
- 8SpamSieve vs MX Guarddog
- 9SpamSieve vs Apache SpamAssassin
- 10SpamSieve vs Proxmox Backup Server
- 11SpamSieve vs SpamHero Business Email Security
- 12SpamSieve vs Zerospam
- 13SpamSieve vs Libraesva Email Security
- 14SpamSieve vs Mailinblack Protect
- 15SpamSieve vs SpamTitan Gateway
- 16SpamSieve vs MailChannels Inbound Filtering
- 17SpamSieve vs Vade for Microsoft 365
- 18SpamSieve vs Mimecast Secure Email Gateway
- 19SpamSieve vs Proxmox Mail Gateway
- 20SpamSieve vs SPAMfighter
SpamSieve alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | MailWasher | 7.6 | Free plan | $4.16/mo | Android, iOS, Windows |
| 2 | Cleanmail | 6.9 | No | — | self-hosted, Web |
| 3 | Retarus Transactional Email | 6.9 | No | — | API, Web |
| 4 | JetEmail | 6.8 | Free plan | $29/mo | Web |
| 5 | Mailprotector | 6.8 | Free plan | Free | API, Web |
| 6 | Forcepoint ZTNA | 6.7 | No | — | Mac, self-hosted, Web, Windows |
| 7 | Mimecast Data Leak Prevention | 6.7 | No | — | Web |
| 8 | MX Guarddog | 6.7 | No | $0.25/mo | Web |
| 9 | Apache SpamAssassin | 6.6 | Free plan | Free | API, Linux, self-hosted |
| 10 | Proxmox Backup Server | 6.6 | No | €46.67/mo | Linux, Web |
| 11 | SpamHero Business Email Security | 6.6 | No | $5/mo | API, Web |
| 12 | Zerospam | 6.6 | No | €5/mo | Web |
| 13 | Libraesva Email Security | 6.5 | No | — | self-hosted, Web |
| 14 | Mailinblack Protect | 6.5 | No | — | API, self-hosted, Web |
| 15 | SpamTitan Gateway | 6.5 | No | — | self-hosted, Web |
| 16 | MailChannels Inbound Filtering | 6.4 | No | — | API, Web |
| 17 | Vade for Microsoft 365 | 6.4 | No | — | Web |
| 18 | Mimecast Secure Email Gateway | 6.1 | No | — | Web |
| 19 | Proxmox Mail Gateway | 6.1 | No | €15.83/mo | Linux, Web |
| 20 | SPAMfighter | 6.1 | No | — | Windows |
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Questions about SpamSieve alternatives
What is the best alternative to SpamSieve?
MailWasher, number 1 in email anti-spam software with a score of 7.6 out of 10. The others here: Cleanmail, Retarus Transactional Email, JetEmail and 16 more.
What is the best free alternative to SpamSieve?
MailWasher is the best-ranked alternative with a free plan. 4 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.