Optimize your email subject lines in seconds

Use Superlines to pre-test and rank email subject line ideas in real-time with predictive analytics. Get new ideas from AI automatically.

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Get the most out of your email marketing

Make sure your email campaigns gets noticed by testing your subject lines with Superlines.

Instant subject line testing

A/B test your subject ideas in seconds.

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AI writer

Get competing subject line ideas written by AI.

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Connect your own data

Optimize Superlines to learn what your customers prefer by training it with your data.

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