Free Email Tester
Forward your email. Get a score across 10 categories with specific fixes — in 60 seconds.
Forward your email to
score@grader.skyp.aiWe'll reply with your score within a minute. No signup required.
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Pro tip
Add score@grader.skyp.ai as a step in your Instantly or outreach sequence to automatically score every email before it goes out.
How the Email Tester Works
Forward your email
Send any email you want analyzed — cold outreach, follow-ups, newsletters, anything
AI analyzes everything
We check deliverability, content quality, spam risk, and persuasion across 10 categories
Get your score report
Detailed score out of 100, category breakdown, and your top 3 quick wins to improve
Why Your Email Score Matters
Most outreach fails silently. Your emails land in spam, get ignored, or never arrive — and you'll never know unless you test.
Email Deliverability Problems Are Invisible
Misconfigured SPF, DKIM, or DMARC means your emails land in spam — and there's no bounce, no error, no notification. They just vanish. Our email deliverability tester catches these before your prospects' inboxes do.
Your Subject Line Decides Everything
47% of recipients decide whether to open based on the subject line alone. A weak subject line wastes every word that follows — and you'll never know it's the reason nobody replies.
Generic Cold Emails Get Deleted
Emails without personalization get 3x fewer replies. If your prospect can tell it's a template, they'll delete it without reading past the first line.
A Vague CTA Means Zero Replies
Every email needs a single, clear next step. Vague asks like 'let me know your thoughts' get ignored. Specific CTAs get responses.
Spam Filters Work Against You Silently
Words like 'guaranteed' or 'act now' send your email straight to spam. You'll never see it happen — your prospect just never responds, and you'll never know why. Our spam tester catches these triggers before you hit send.
A Higher Email Score = More Replies
A 10-point improvement on your email score can mean 2–3x more replies over a campaign. Testing before sending is the highest-leverage thing you can do.
10 Categories We Score
Each category is scored 0–10, for a total out of 100. Here's exactly what our email tester checks.
Deliverability
SPF, DKIM, DMARC, and MX record checks on your sending domain
Subject Line
Length, curiosity, relevance, and open rate potential
Opening Hook
First sentence impact — does it earn the next line?
Personalization
Relevance signals that show this isn't a mass blast
Value Proposition
Clarity of what's in it for the recipient
Call to Action
Single, specific next step that's easy to say yes to
Length & Format
Readability, scannability, and appropriate length
Tone & Voice
Professional yet human — not robotic, not too casual
Spam Risk
Trigger words, patterns, and formatting that trip filters
Standout Factor
What makes this email memorable vs. the 100 others they got today
Frequently Asked Questions
Everything you need to know about the free email tester.
Want help from an email expert?
Our team helps B2B sales teams write outreach that gets replies. Book a consultation and we'll review your campaigns.