High bounce rate? Got a warning from your email provider? Scrub runs every address on your list through 20+ checks. Fake, dead, disposable and risky emails get caught before your next send, not after they hurt your deliverability.

Bounce rate over 2%Warning from your ESPCampaigns landing in spamPaying for contacts that don't exist

Bring your list

Upload a CSV, paste addresses, sync from Listmonk or Listnun, or call the API.

We check every address

20+ checks on every email, run in parallel, with duplicates removed.

Send to a clean list

Download your results with a valid or invalid status and a 0–100 quality score on every address.

Won't deliver · Removed before they bounce

Typos & broken formats

Missing @, stray spaces, double dots, no domain. Junk that should never have made it onto your list.

Fake & made-up domains

Domains that don't exist, like gmial.con or asdf.xyz, caught with a live DNS lookup.

Domains that can't receive mail

No MX records means every send to that domain hard-bounces.

Dead & non-existent mailboxes

Where the mail server allows it, a live SMTP check asks whether the inbox exists, catching deleted accounts and made-up names.

Hurts your reputation · Flagged as risky

Disposable & burner emails

Throwaway inboxes used by bots and freebie hunters, checked against a blocklist that updates automatically.

Catch-all domains

Where the mail server allows it, we spot servers that accept every address, so real and fake look the same, and flag them so you decide.

Role & dummy addresses

info@, admin@, noreply@, test@. Shared or placeholder inboxes that rarely engage and often complain.

Spoofable domains

We check DMARC so you know which domains protect their mail and which can be spoofed.

Know your list · Context to segment and send smarter

Duplicates removed

The same person twice means paying twice and annoying them twice.

Free vs business email

Separate Gmail and Yahoo signups from company addresses for B2B targeting.

Mailbox provider

See who hosts each inbox: Google Workspace, Microsoft 365, Yahoo and more.

Quality score & reason

A 0–100 score and a plain-English reason on every address. No black box.

Why it matters · What's hiding in your list

2–7%

of signups contain typos or misspelled domains

5–15%

enter a made-up or gibberish address to bypass a gate

10–40%

are bot or spam signups without CAPTCHA or DOI

3–10%

use disposable or catch-all addresses

Simple, transparent pricing

Pay only for what you use. No hidden fees. Flat-rate plans available for higher volume.

Pay-as-you-go

$0.005

per email

First 100 validations free · Up to 5,000/month

No credit card required

Need more than 5,000/month? Commit to 10,000 validations for a flat $40/month (same $0.004 rate) — predictable billing, no per-validation surprises. Contact us.

Personal

$0.004

per email

10,000 validations/month · $40/month flat

Growth

$0.0035

per email

10,001 – 100,000 validations/month

Scale

$0.0030

per email

100,001 – 1,000,000 validations/month

Validation

Format & syntax check

MX record verification

Disposable email detection

Role-based address detection

Processing

Single email API

Bulk CSV upload

Results download as CSV

Real-time job progress

Platform

REST API access

Validation history

Integrations

Ready to clean your list?

Start validating emails in seconds — no credit card required. Keep your sender reputation high and your bounce rate low.

Get Started Free

FAQ

How much does it cost to start cleaning my email list?

You can start for free — no credit card required. Scrub operates on a pay-as-you-go model by default, so you only pay for the emails you validate, with no minimum spend. If you'd rather have predictable billing at higher volume, flat-rate monthly plans are also available.

What types of emails does Scrub detect?

How do I clean a large list?

Scruubb

Scrub is an email hygiene tool that flags invalid, disposable, and role-based addresses so you can protect your sender reputation.

Quick Links

Pricing Docs Blog

Remove .css-hlhqus{font-style:italic;color:var(--chakra-colors-red-400);}invalid emails, block fake users and bots

Stop the bouncesbefore they cost you your sender reputation

Simple, transparent pricing

Ready to clean your list?

FAQ

Remove invalid emails, block fake users and bots

Stop the bounces
before they cost you your sender reputation