Email List Growth Hacks Part 2 - Boosting Open Rates with Subject Line Optimization
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These subject line growth hacks will easily increase your open rates by 30%.

Here's the AI SEO tool tailored for Bloggers: https://www.rankiq.com/) Here is the blog post with 1000+ emojis you can copy and paste into your subject line: https://www.freecodecamp.org/news/all-emojis-emoji-list-for-copy-and-paste/)