You can add indents to paragraphs in any text block by using the Add > Character tool.
Follow these steps to add an indent for your paragraph:
1. Open your email template in Modern Editor
2. Click on the text block you want to edit from the preview panel (the right side of the editor)
3. Place your cursor in the text block where you would like the indent to go
4. Click on Add > Character
5. Select non-breaking space symbol - this is the first empty space in the character menu
Insert this symbol about 3-4 times. You now have a paragraph indent!