I agree, I’ve had pretty good results using MJML now for several years (and I’ve been doing HTML emails since almost the 90’s!) This is a problem area where a

I agree, I’ve had pretty good results using MJML now for several years (and I’ve been doing HTML emails since almost the 90’s!) This is a problem area where a good abstraction framework is highly useful in my opinion. That said I don’t specialise in email, it’s something I do “when I need to”. So if I was spending more time doing this sort thing, I might be more inclined to move down an abstraction level back to HTML/CSS and improve my knowledge of various client support. To just get the job done though, MJML is highly recommended. I see also a lot of mentions on this thread about replying to emails breaking the layout. Part of me thinks we’re fighting a losing battle here anyway so there is a limit to how much time it’s worth spending to make sure even replies are formatted nicely across all clients. But the other thing to consider is whether the email template is just trying to do too much. I try and keep my email templates very sparse, clean and simple and I generally haven’t had too many issues with reply/forward formatting (that I’m aware of).