Test your email
before it hits spam.
Upload your .eml file and get Gmail & Outlook inbox scores, AI-powered advice, and actionable fixes — in seconds.
Everything you need to land in the inbox
Comprehensive analysis from authentication to content scoring.
Gmail & Outlook Scores
Heuristic inbox placement scores for the two most popular email providers, so you know where your message is likely to land.
AI-Powered Advice
Get specific, actionable recommendations powered by AI to improve your subject line, content, and authentication setup.
List Hygiene
Upload your email list to detect invalid addresses, spam traps, and role-based emails before they hurt your sender reputation.
PDF Reports
Export full deliverability reports as PDF to share with your team or clients, including scores, issues, and fix recommendations.
SPF / DKIM / DMARC
Instant pass/fail status for all three authentication standards, with guidance on how to fix misconfigurations.
Subject Analysis
Detect spam trigger words, excessive caps, emoji overuse, and length issues in your subject line before you hit send.
Try it free — no account needed
Check your subject line for spam triggers, capitalization abuse, and length problems instantly.
Free Subject Line Checker
Instant spam score for your email subject — no sign-up required.
Start free, upgrade when you need more
The Free plan gives you 10 tests per month. Upgrade for AI advice, more tests, and team access.
See PricingFrequently Asked Questions
Our scores are heuristic estimates based on known spam filter signals — SPF/DKIM/DMARC status, content patterns, header analysis, and subject line scoring. They do not involve live sending to seed accounts. Use them as a directional guide, not a guarantee of inbox placement.
A .eml file is a standard email format containing full headers and body. In Gmail, use "Download message" from the three-dot menu. In Outlook, drag the email to your desktop. See our Gmail export guide and Outlook export guide for step-by-step instructions.
Uploaded .eml files are stored securely and associated only with your account. We process them to generate your report and do not share content with third parties. You can delete any test report at any time from your dashboard.
AI advice is available on Starter and above plans. It analyzes your full email — subject, headers, HTML content, and authentication — and provides specific, prioritized recommendations for improving deliverability. Available on Starter (10/month), Pro (50/month), and Agency (unlimited).
The Free plan supports 1 project and 10 tests per month. For client work, the Agency plan provides unlimited projects, unlimited tests, and team access — making it the best fit for agencies managing multiple clients. See all plan details.
ISP Deliverability scores are heuristic estimates based on static analysis of email headers and content. They do not involve live delivery to real mailboxes and are not a guarantee of inbox placement. Actual delivery depends on your sender reputation, IP history, and recipient engagement.