SMTP email templates break html

Hey, Im trying to create a custom template for the team invite email. The issue is the html invite I created (which works in normal emails and fake emails I send with appwrites messaging ) doesnt work when i put it into the templates. Is there any reason as to why or the fix?

To be more specific, the html works but the coloring breaks, its zoomed out (like its in an iframe box) and about 60% of the styling breaks

Gulp

?