SignUp Guard

Allowlist & blocklist

Your rules, enforced at the door

Maintain custom allowlists for trusted partners and blocklists for repeat abusers. Your policies apply on every check, automatically.

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SignUp Guard — Recent analyses
EmailTypeScoreVerdict
alex@acme.ioBusiness92Allow
jane@gmail.comPersonal58Review
test@mailinator.comPersonal6Block

Why it matters

From problem to solution

The problem

Global rules miss your context. A domain that's fine for one product is toxic for another, and you need override control without deploying code.

How SignUp Guard helps

Add domains and addresses to your account allowlist or blocklist from the dashboard. SignUp Guard applies your rules before generic scoring so trusted partners always get through and known bad actors never do.

Key capabilities

See it in action

Every check runs through the same pipeline — here's what that looks like for allowlist & blocklist.

Your policies

Allowlist

partner.io
investor.com

Blocklist

scraper.dev

eve@scraper.dev

Score 12

Blocklist matchBlock

  • Domain and address rules

    Block entire domains or single addresses depending on how granular you need to be.

  • Team-managed

    Pro and Business plans let your team update lists without engineering deploys.

  • Overrides scoring

    Allowlist entries bypass false positives; blocklist entries stop repeat offenders instantly.

Use cases

Built for real workflows

  • Always allow partners

    01

    Always allow partner and investor domains

    kim@partner.ioAllowlist matchAllowed

  • Block scrapers

    02

    Block competitors scraping your free tier

    eve@scraper.devBlocklist matchBlocked

  • Enforce compliance

    03

    Enforce compliance-specific domain policies

    user@blocked.tldPolicy ruleRejected

Ready to protect your signups?

Start free with 500 checks per month. No credit card required.

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