Every invalid email in your list hurts your deliverability. EmailGuard checks your CSV for bad syntax, inactive domains, disposable addresses, and role accounts — before you hit send. $29 one-time, no monthly credits.
Catches obvious typos — missing @, invalid characters, malformed domains. Flags them before anything else runs.
DNS lookup to verify the domain actually accepts email. Catches dead domains and deregistered companies that still appear in databases.
Flags addresses from Mailinator, temp-mail, guerrilla mail, and 200+ other disposable email providers. These are never real buyers.
Identifies info@, noreply@, support@, admin@, and similar role accounts. These rarely convert and often flag your domain.
Deep check via Hunter.io API — actually pings the mail server to confirm the mailbox exists. 50 free/month on Hunter's free tier.
Adds a column to your existing CSV: valid, risky, or invalid. Filter in Excel and remove the bad rows before importing to your sequencer.
Monthly credits vs. a script you own.
| Tool | Price | Monthly Limit | MX Check | Disposable Detection | Runs Locally |
|---|---|---|---|---|---|
| EmailGuard | $29 once | Unlimited | Yes | Yes | Yes |
| NeverBounce | $0.003/email | Pay-per-use | Yes | Yes | No |
| ZeroBounce | $15-49/month | 2k-10k/month | Yes | Yes | No |
| Hunter.io verify | $49/month | 500/month | Yes | Yes | No |
Run it on any CSV. Get back a clean list with a status column. $29 one-time, no monthly credits, no upload limits.
Get EmailGuard - $29 one-timeEmail to buy. Download link sent within a few hours. 60-day money-back guarantee.