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About Litmus
Litmus is the premium email optimization platform used by major brands and agencies to test, personalize, analyze, and optimize email campaigns before sending. It includes email previews, spam testing, email analytics beyond open rates, and a collaborative review workflow. The enterprise standard for email quality assurance.
Reviewed by the FindersList Editorial Team
·Reviewed June 2026
·How we review·Some links may earn us a commissionWhat's Great
- ✓Enterprise email QA standard
- ✓Deep email analytics beyond opens
- ✓Collaboration and approval workflows
- ✓Spam filter testing across ISPs
Watch Out For
- !Expensive (entry Core plan starts at $500/mo)
- !Overkill for small senders
- !Some previews require full plan
Common Use Cases
1
Enterprise email QA
2
Agency email testing workflow
3
Pre-send compliance verification
Best For
Pricing Model
Paid
From $500/mo. Paid subscription required. Check website for current pricing.
Category
Email Testing & Deliverability
Test, preview, and optimize email deliverability and inbox placement.
Tags
email testinganalyticsspam testingpersonalizationenterprise