Email Open Rates & Testing
Know what a good open rate actually is before you judge a subject line. This hub covers email open-rate benchmarks by industry, the CTR, CTOR and unsubscribe rates that matter more than opens after Apple MPP, and how to A/B test your way to better numbers. Benchmark honestly, then generate and test subject-line variants.
Written & reviewed by Clover Elise Winter, Senior SEO Content Strategist & Technical Research WriterLast reviewed: Articles in this hub
More AI Email Subject Line Generator guides
Tested email subject line examples and templates by scenario - cold, follow-up, breakup, and more - with length rules and spam triggers that lift reply rate.
Email subject line best practices - capitalization, length, punctuation, spam triggers and personalization rules that lift open rates, with worked examples.
Why emails go to spam and how to fix it - authentication, sender reputation, list hygiene and spam trigger words, plus a deliverability checklist.