A newsletter can include an HTML version with a layout, images, and styled links as well as a plain-text version. When both are included as alternatives in the same message, the email client can choose the version that suits the current view.

What belongs in the plain-text version?
Keep the essential information in the same order. Present important links clearly and check whether the next action makes sense without images. A plain-text version is especially useful when the email client does not use an HTML view.
Example of an invitation
The HTML version contains a registration button. In the plain-text version, the date, location, and registration URL appear as readable text. In mailfino, you can check the text view alongside desktop and mobile views before sending.