You can import data into Zentail without using an Import Template. All you need to do is make sure that you are using a recognized field value in the header row for each of your columns.
Here's how it works:
Enter recognized field values in the first (header) row of your spreadsheet and fill in the spreadsheet with the data you want to import.
Go to Import > Templateless Product in the top navigation.
Click UPLOAD FILE and select the file from your computer.
Preview the Import to make sure Zentail is mapping your data to the correct attributes.
Click START IMPORT.