Rspamd
8.2#1 in email security gatewaysFrom £100 a monthFree planWebAPILinuxmacOS
VisitRspamd vs SpamSieve
What both publish
| Fact | Rspamd | SpamSieve |
|---|---|---|
| Custom rules | Rspamd supports custom filtering rules through its Lua API and configurable maps and selectors. | Users can create allowlist and blocklist rules matching message headers or body text, including with regular expressions. |
| Filtering | It combines reputation, sender authentication, content analysis, and machine learning to score and filter messages. | It uses Bayesian spam filtering that adapts to the mail you receive. |
| Purpose | Rspamd is an email security engine designed to stop phishing, business email compromise, malicious attachments, and spam. | SpamSieve adds spam filtering to an e-mail client on a Mac. |
Rspamd plans
- Open-source RspamdFree
- Scale£100 a month
- EnterprisePriced on request
- HostedPriced on request
SpamSieve plans
- SpamSieve$39.99, paid once
Pick Rspamd if…
Rspamd suits organizations operating their own mail systems that need gateway filtering and control over deployment. It may also suit teams seeking premium engineering support or enterprise SLA options.
Pick SpamSieve if…
It suits Mac users with a compatible mail client who want adaptive spam filtering and attachment inspection. It is not suited to browser-only mail or direct iOS installation.