Privacy & compliance

A list you can defend: explicit consent with evidence, statutory disclosures enforced at publish time, junk kept out, and popups every visitor can use.

GDPR

List quality & anti-spam

LayerWhat it does
ValidationSyntax checks, normalization, and a block on disposable/throwaway email domains ("Please use a permanent email address"). Optional DNS-level (MX) verification.
HoneypotA field humans never see; bots that fill it get a silent fake success and never touch your list.
Rate limitsPer-visitor caps on signups and events stop scripted abuse cold.
DedupeKnown emails are recognized (answers/phone merge onto the existing record) and flagged so opt-in metrics count only net-new subscribers.

Accessibility

DisclaimerJanus gives you compliant defaults and hard guardrails, but marketing-law compliance depends on your copy, your flows and your jurisdictions; when in doubt, run the specifics past your counsel.