You can easily crop images using the drag & drop editor. When you select the block which contains the image you would like to crop, select the edit icon.
Next, you will see the following screen:
You can use the zoom function to indicate how far you want to zoom in and which part of the image should be visible in your email.
Use the crop icon to crop your image. It’s also possible to specify how big your image should be.
Use the reduce icon to decrease the size of your email. Use the check icon to see what the changes look like or the red cross to abort.
It’s a good idea to reduce the size of your images, in order to make sure that your email is not too big and quickly loads once it is in the inbox of your recipients.
Now save the image and use it in your emails. If you are not satisfied with the changes, use the back icon and all your changes will be undone.