InboxCheck

Fast email list cleaner, no paid APIs

Clean your outreach list before you hit send.

$29 one-time, launch price

Buy InboxCheck on Gumroad Getting started guide Try it free

Bad emails burn domain reputation and waste send volume. InboxCheck checks syntax, MX records via DNS-over-HTTPS, about 10,000 disposable domains, role addresses (sales@, info@), free-provider flags and common typo suggestions (gmial → gmail).

Each result gets a status (valid / risky / invalid / unknown), a 0–100 score and clear reasons. No account and no paid API. It does not ping mailboxes (no SMTP check), so treat it as a first-pass cleaner.

Features

Paste emails or upload a CSV with a column picker
MX, disposable, role and free-provider checks
Typo suggestions for common mail domains
Filters + export valid-only or full CSV with results
Free: 50 emails/day. A license key unlocks unlimited checks.

Buy for $29

FAQ

Does it use paid verification APIs?

No. The checks need no paid API and no API key.

Does it check if the mailbox exists?

No. There is no SMTP mailbox ping.

How do I pay?

Checkout is handled securely by Gumroad. You get your download or access instructions in the Gumroad receipt.

Something doesn't work?

Reply to your Gumroad receipt and we'll help.

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