Is there a content personalization feature in Wavo?

Yes, there is. It's known as Merge Fields, You can create and upload any Custom Fields you wish and use them to personalize your email sequences.

The Merge Fields should be included in CSV uploaded files as column headers, like Name, Email, Phone, Industry etc. You can add custom Merge Fields that help you in personalizing messages to your leads, such as "Portfolio" (to give a compliment to the recipient, for working with an important company, or for achieving great results, or any major event.) 

Once you prepare a number of custom Merge Fields in your uploaded CSV, they will be automatically used wherever you insert them in any email version.

Below is an example of a personalized email using these Custom Fields: