Features
Everything you need to protect signups
Classify, score, and enforce — built for the signup hot path.
Email intelligence
Know if a signup is business or personal
Every signup tells a story. SignUp Guard classifies emails as business or personal so you can route real buyers to sales and keep consumer noise out of your pipeline.
- Domain-aware classification — Custom domains, consumer providers, and role accounts are scored differently so you get consistent labels.
- Actionable at signup — Return a clear type label in your API response and decide in code — allow, review, or block.
- Works with your stack — One API call before account creation. No list cleaning jobs or batch imports required.
route to sales queue
Disposable detection
Catch burner emails before they pollute your product
Combine curated disposable-domain lists with AI risk scoring to stop temporary inboxes, abuse patterns, and throwaway signups in real time.
- List + AI combined — Curated disposable lists catch known providers; AI scoring catches variants and emerging patterns.
- 0–100 quality score — Every check returns a numeric score where higher means a more trustworthy signup, plus allow, review, or block recommendations your code can act on.
- Sub-second responses — Built for the signup hot path — validate before you provision accounts or send welcome emails.
allow ≥ 66 · review 31–65 · block ≤ 30
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.
- 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.
Your policies
Allowlist
Blocklist
eve@scraper.dev
Score 12
Analysis history
Full visibility into every signup decision
Every email check is logged with type, score, verdict, and signals. Audit abuse patterns, debug false positives, and prove compliance.
- Signal-level detail — See exactly which signals contributed to each score — not just a pass/fail label.
- Retention by plan — 7 days on Free, 90 days on Pro, unlimited on Business so history scales with your needs.
- Team visibility — Shared history across your account so support and engineering see the same data.
| Time | Verdict | |
|---|---|---|
| 14:32:08 | alex@acme.io | Allow |
| 14:31:54 | jane@gmail.com | Review |
| 14:31:41 | test@mailinator.com | Block |
| 14:31:22 | sam@startup.dev | Allow |
test@mailinator.com
Signal breakdown
Team management
Bring your team into one account
Invite teammates to manage lists, review history, and monitor signup quality — with seat limits that match your plan.
- Simple invites — Add teammates from settings — no complex RBAC required for day-one workflows.
- Plan-based seats — 1 seat on Free, 3 on Pro, 10 on Business. Upgrade when your team grows.
- Shared workspace — One API key, one history, one set of lists — everyone works from the same source of truth.
Invite teammate
Workspace members
Bruno Q.
Alex K.
Jordan M.
Ready to protect your signups?
Start free with 500 checks per month. No credit card required.