Email templates consists of plane text or HTML code and placeholders for dynamic data (customer names, domain names, amounts, etc...). For more info about placeholders available for usage, check Atomia documentation. Step by step instructions are following:
  1. In Admin Panel, go to Settings -> Mail Templates
  2. Select desired template to edit
  3. Edit Content field by desire
    1. Optionally, copy content to some HTML friendly editor for easier editing.
  4. Save changes made