Find obvious copy risks before a cold email sequence goes live.

This checker flags common wording, formatting, and compliance risks that should be reviewed before prospect traffic starts.

How it works

  • Paste a subject line and message body into the browser form.
  • The checker scores known spam-trigger phrases, link patterns, formatting issues, and missing unsubscribe language.
  • Results are advisory; they do not predict inbox placement or provider filtering outcomes.

When to use it

  • Before uploading a new cold email sequence into a sending platform.
  • When a follow-up has aggressive claims, heavy formatting, or too many links.
  • As a lightweight QA step before launch-gate approval.

Common failure cases

  • Treating a low spam score as a guarantee of inbox placement.
  • Sending copy without unsubscribe or opt-out language where it is required.
  • Using exaggerated revenue, urgency, or guarantee language that does not match the offer.

Examples

What good and bad signals look like

Lower-risk pattern

Plain text, specific reason for reaching out, one clear CTA, unsubscribe language

Simple copy is easier to review and avoids several common spam-risk patterns.

Higher-risk pattern

ALL CAPS subject, money claims, multiple tracking links, no opt-out language

These patterns can trigger filters and create compliance or reputation risk.

What to do next

  • Rewrite flagged phrases before uploading the campaign.
  • Check DNS and readiness separately; copy QA does not prove infrastructure readiness.
  • Use seed-placement evidence before opening prospect traffic.
Plan safe sending capacity

Copy QA is one step; capacity and readiness need to be planned together.

Related tools and workflows

DNS & auth checker

Check domain authentication separately from copy quality.

Smartlead capacity calculator

Plan inbox capacity before loading a Smartlead campaign.

Agency API quickstart

Use readiness gates before exporting accounts to sequencers.

Cold email inbox calculator

Turn a DNS or authentication check into a conservative inbox-capacity plan.

FAQ

Does this checker guarantee that an email avoids spam?

No. It only flags common copy risks. Inbox placement depends on infrastructure, reputation, recipient behavior, provider filtering, and current evidence.

Does GTM Inboxes store pasted email content?

No. The public spam checker evaluates the submitted content for the request and does not store it.