EmailTemplateABTestRunner
Automatically A/B tests email template variations and tracks which subject lines, layouts, and CTAs drive higher conversions for SaaS product teams.
The Problem
SaaS companies send transactional and marketing emails but lack built-in tools to systematically test variations at scale. Most rely on expensive email platforms (Klaviyo, Mailchimp) that charge per contact or lack granular A/B testing for template logic. Teams manually swap variables and guess which changes improve open/click rates, wasting engineering time and leaving conversion gains on the table.
Target Audience
Early-stage SaaS founders, growth engineers, and product teams at companies with 5K-500K monthly active users sending 100K+ emails/month who use Resend, SendGrid, or Mailgun directly.
Why Now?
Resend, Mailgun, and SendGrid have made sending emails programmatically frictionless; growth teams now want built-in experimentation without switching platforms or paying per-contact fees that explode with scale.
What's Missing
Enterprise email tools bundle testing but charge prohibitively; open-source and developer-first email solutions have zero testing primitives. The gap exists because existing tools assume marketing teams control email; they don't account for product-driven senders.
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