Template checker · Mailbox calculator · SPF generator · DMARC generator · DKIM generator · Deliverability test

Template checker

Paste a subject + body. We score them against the same heuristics ESP filters use: spam-trigger phrases, length, link density, personalisation, and greeting. No data leaves your browser session.

Input

Subject Body

Score

Fill in the subject and body to see the score.

What we check

Subject: length, exclamation density, all-caps words, emoji, currency signs, common spam-trigger phrases.
Body: word count, reading time, link count, question density, personalisation tokens, greeting, ~80 spammy phrases.

The rubric is rule-based and runs entirely on the server with no external API call — paste freely, your draft never leaves our infrastructure.