PaperKnife is a handy and extremely easy-to-use application that lets you slice your Canva email templates in seconds. All you need is an email template with images in Canva, and you'll have the ability to slice your design and edit it from your email template in a few clicks. It offers many great features to help you. 

First, you'll be able to create your Canva email templates with the PaperKnife plugin from the Tools tab. Just enter the email template's URL, which you can access from the Settings tab. You'll be able to add text and use the links as you wish. You can also edit the alt description in each image. It's also possible to copy and paste images. After finishing your edits, you can share your designs with a URL that you create.

Canva's design app is a great tool for any designer, beginner or expert.