Superlines uses reporting data and machine learning to predict content performance in real-time.

Free and Preium plans supports currently English, Finnish, Swedish, Italian, German, Dutch and French. In Busines plan, we can optimize Superlines to support any language.

You can start free and test Superlines by signing in with your Google account. The free plan includes 100 free test tokens, all major channels and languages. After this you can upgrade to Premium plan to continue using Superlines and to unlcok the AI-writer feature.

Contact us if you wish to train Superlines with your data and upgrade to Business plan.

Our dataset is a combination of performance data from our own marketing channels, open source datasets, and self-labelled data curated by marketing professionals.

In our tests the accuracy of the A/B test rankings are around 70%. The purpose of Superlines is to give marketers and content creators quick performance analysis in seconds that are purely data-driven and without human bias. This will save time and money as you don't have to be buried in reports and metrics, and also lead to better performance without the need of traditional A/B testing.

Superlines is very privacy friendly. It does not use any 1st party data or sensitive data to train the prediction models. When training Superlines with your own performance data, a simple CSV sync is enough.

Email subject line optimizer works with Hubspot, Salesforce Marketing Cloud, Adobe Campaign, or any other email tool that is capable of exporting subject line and performance data reports.