Spam sensitivity (Relaxed / Balanced / Strict)

You can tune how aggressively Spamless filters mail per domain. The setting changes where the lines are drawn between "deliver", "quarantine" and "reject".

The three levels

• Relaxed — fewer false positives. Only higher-confidence spam is quarantined, and it takes a very high score to reject; borderline mail is delivered. Choose this if legitimate mail was being held.
• Balanced (default) — the recommended setting for most domains.
• Strict — catches more. More borderline mail is quarantined, and clear spam is rejected sooner. Choose this if too much spam is getting through.

How to change it

1. Open Domains in the dashboard.
2. On the domain's card, pick a level from the Spam sensitivity dropdown.

Available on Pro and Enterprise; on Basic the page shows an upgrade notice instead of saving. A level you set while on a paid plan keeps working — you just can't change it until you upgrade again.

Only the account owner can change sensitivity, and only on a verified domain (a domain still showing Pending ownership has the dropdown locked). The change takes effect within about 5 minutes and applies to that domain only — other domains are unaffected.

How it works under the hood

Every message gets a spam score. "Relaxed" raises the bar for quarantining and rejecting (so fewer messages are held); "Strict" lowers both (so more are). A domain with no custom setting uses the Balanced defaults.

Tips

• If a sender keeps getting caught, add them to your allow list instead of loosening the whole domain — see Allow & block lists.
• Pair sensitivity with the quarantine view to confirm the effect over a few days.