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Free email tools for campaigns built to perform.
Create, test, clean, preview, and diagnose your email setup. Read every guide freely, then sign in to run the tool and keep your work private.
Test
Email Subject Line Tester
Score clarity, length, urgency, and risk.
Open toolTest
Email Spam Checker
Find content risks before you send.
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HTML Email Tester
Inspect email HTML and repair common issues.
Open toolCreate
Email Signature Generator
Build a clean, copy-ready signature.
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Email Template Generator
Turn an offer into campaign-ready HTML.
Open toolTest
Email Preview Tool
Review desktop and mobile email layouts.
Open toolDomain
SPF Checker
Inspect a domain’s published SPF policy.
Open toolDomain
DKIM Checker
Check a DKIM selector and public key.
Open toolDomain
DMARC Checker
Review domain spoofing protection.
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Email Deliverability Checker
Check domain and content readiness together.
Open toolPlan
Email Campaign ROI Calculator
Model revenue, costs, and break-even conversions.
Open toolCreate
Newsletter Template Generator
Create a structured, readable newsletter.
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CSV Email List Cleaner
Normalize, deduplicate, and export addresses.
Open tool