Subject Line Tester
Score your subject line for length, clarity, urgency, and open-rate signals.
Test subject ->Free tools
Email checks before you press send
Test the details that decide whether a campaign gets opened, trusted, and delivered. Pigeon tools help you spot weak subject lines, risky copy, and missing domain records before your audience sees anything.
Pigeon readiness
4 checks
Subject clarity
Spam signals
DMARC authentication
Audience landing page
Choose a tool
Start with a fast standalone check, then bring the same thinking into every campaign you send with Pigeon.
Spam Score Checker
Paste your email copy and find wording, formatting, and setup risks before sending.
Check copy ->DMARC Checker
Look up your domain DMARC record and understand what inboxes will do with failed mail.
Check domain ->Link in Bio
Create a simple subscriber-friendly landing page for your links. Free with Pigeon.
Start free ->Why it matters
Small checks prevent expensive sends.
Most campaign problems are easier to fix before sending: a vague subject, a spammy phrase, or a missing DNS record. These tools keep those checks visible, practical, and fast.
1
Write
Tighten the subject and message.
2
Verify
Check spam and authentication signals.
3
Send
Launch with more confidence.
Ready to send cleaner campaigns?
Use the free tools now, or create an account and keep every list, link, and campaign in one place.