How to check the layout of the mailing list from the artist?

Question

HTML

I ordered the layout of the letter - a typical template, they threw off what I made up - I can see the norms from the computer, but from the phone - it doesn’t stretch, it doesn’t adapt! is that how it should be? how to check these points?

Answer 1

attach this newsletter to the engine and send letters to all popular soaps (yandex, mail, gmail for example). and look from there. and through the phone, and through the desktop, etc.

Answer 2

Send a test email via putsmail and see how it looks on desktop and phone.