AI subject-line tester/optimizer
Mailchimp (A/B testing)
Best for: Small teams already on Mailchimp wanting more variants (3) than Klaviyo's 2
Where it fits in content creation work
Test up to 3 subject line/content/layout variations (paid plans only) with multivariate campaign reporting
The essentials
Starting priceFree / Essentials $13/mo for A/B testing
Free tierFree plan exists but A/B testing requires Essentials ($13/mo)
RegionWest