There is no way to add cellspacing for a table. For example, it is possible to add cellpadding through the 'Cell properties' contextual toolbar option but same way, I could not find any option to add ...
mj-table compiles into a HTML table with incorrect attributes and styling, also unable to set cellpadding and cellspacing for the table. ./node_modules/.bin/mjml -w ./mjml/example.mjml ...