Will your email look like spam?
Paste your subject and email. You get a 0–100 safe-to-send estimate with every factor explained, the words and patterns filters and readers associate with bulk mail, and a preview of your spintax variations.
Everything runs in your browser: your text is never sent to us or stored, and nothing is saved when you leave. Spintax works here too: {Hi|Hello}, weights {Hi::3|Hello}, nesting and [[shuffled|sentences]].
Paste a subject and an email to see which words and patterns filters and readers associate with bulk mail.
Part of Campaigns in Inboxed. Build, check and launch cold email campaigns free; pay $1 per 1,000 emails as they send.
See CampaignsStart freeQuestions
Is a spam word enough to land in spam?
Rarely on its own. Providers weigh your sender reputation, authentication (SPF, DKIM, DMARC) and whether people reply far more. Fewer signals is still safer, especially for new domains.
Is my email stored?
No. The check runs in your browser and nothing is sent to us.
How is the 0–100 score worked out?
From content signals: trigger words, links and where they go, images, length, personalisation, spintax variety, capitals and punctuation, plain text vs rich, leftover placeholders and first-email rules. Each factor shows its points and how to fix it. It’s an estimate; it can’t guarantee inbox placement.
What counts as a signal?
Pushy urgency, money claims, too-good-to-be-true promises, ALL CAPS, repeated exclamation marks, link shorteners and too many links, among others.
Warm up today. Launch when you’re ready. Pay only for emails that send.
No subscription, no card to start. Connect a mailbox and warmup begins in under a minute.