Email Spam Word Checker
Paste your subject and body. We'll flag the words that get emails filtered — and tell you what to do instead.
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Get started with GetResponse →Why good emails still go to spam
Spam filters score every message before it reaches the inbox. Trigger words are only one input — but they're the one you control completely and instantly. A single "FREE!!! GUARANTEED" can tip a borderline message into the junk folder, taking your open rate down with it.
This checker scans your copy against the trigger words filters weigh most heavily and groups them by risk. It runs entirely in your browser — nothing you paste is sent anywhere.
The other half of deliverability
Words matter, but inbox placement is mostly infrastructure. Even perfect copy lands in spam if these aren't set up:
- Authentication (SPF, DKIM, DMARC): tells inbox providers you're really you. Non-negotiable in 2026 — Gmail and Yahoo require it for bulk senders.
- Sender reputation: built slowly by people opening and replying, destroyed fast by spam complaints.
- List hygiene: emailing dead addresses tanks your reputation. Remove non-openers.
- Text-to-image ratio: image-only emails look like spam. Keep real text.
A reputable email platform handles authentication and reputation for you automatically — which is most of the battle.