Today I have problem with an email marketing I did.
Indeed, I made my own letter via Adobe XD and I exported it to HTML thanks to Plugin.
The rendering is perfect on webpage, I did some retouching and everything is perfect.
The problem is that when sending to an address, the rendering is totally broken, horrible, no structure...
I would like someone can fix this problem and also can explain to me so that I never have this problem again in the future.