What a useless cheap email editor, it's just unbelievable.
I don't know where to start, you just have no real control over the look of the emails, neither in fonts, horizontal spacing/padding, especially how the mobile version should look afterwards. Not even HTML headings (h1, h2...) can be set/predefined (not to speak of own classes), you always have to format everything again. Images are ALWAYS set to full width in mobile view, fixed width or horizontal padding are not possible. Google Fonts are not really implemented, they are not loaded at the client anyway (and even no 'Montserrat' font offered). Lists ALWAYS have "1.0" line spacing, no matter what you set and you can't edit/change/color the bullets. We are often forced to insert text as an image. We cannot edit the email's HTML, or insert our own style sheet.
The list of shortcomings and restrictions while editing the very first eMail as a new designer/employee of a foundation using CC was ENDLESS, the user experience is just horrible, the look of the emails is horrible as well, especially on mobile devices. (Even) is 4 x better. I will recommend to change the provider.