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Free tool · no signup · runs in your browser

Cold email spam words checker.

Paste an email. We flag spam-trigger words, links, ALL-CAPS and exclamation marks and score it 0–100 — in your browser, nothing is uploaded.

No card required · Your own mailboxes · Cancel anytime

    Flagged text

    Then do it inside the product

    Every tool here is a screen in Quotarider.

    Subject lines and sequences drafted by Sequence Writer, spam checks inside Inbox Shield, pipeline templates as industry packs, DNS checks before every send.

    Inbox Shield · pre-flight · sales@yourdomain.com
    Ready to send
    18/18checks cleared
    SPF aligned
    DKIM 2048-bit
    DMARC p=quarantine
    MX resolves
    rDNS matches
    Not on 12 blocklists
    Domain age > 30 d
    Warm-up day 21/28
    Daily cap 40/mailbox
    Custom tracking domain
    Unsubscribe header
    Spam words: 0
    Links: 1, same domain
    HTML/text ratio OK
    Bounce rate 0.6%
    Complaint rate 0.02%
    Reply address monitored
    Send window 09–17 local
    Inbox ShieldNothing leaves a mailbox until every check passes. A failed check blocks the send, not the report.

    Questions teams ask

    Is the score the same as a spam filter’s?

    No — filters weigh reputation and authentication far more than words. This catches the content signals you control before Inbox Shield checks the rest.

    What is a good score?

    85+. Below 65, rewrite.

    Is my data stored?

    No. Every tool runs entirely in your browser; nothing is sent to a server.

    Can I share this tool?

    Yes — link to it freely.

    Free tool. Free plan.

    The plan never expires either.

    Credentials encryptedMailbox and AI keys sealed with AES-256, scoped to your workspace alone.
    Your mailboxes, your domainWe never send from a shared IP pool or resell you email credits.
    Agents never send aloneEvery agent output is a draft. A human approves before anything leaves.
    No card to start7 days free on the full platform. No setup fee, ever. Cancel in one click.
    Your data stays yoursExport contacts, deals and campaign history whenever you want.