Mail

Developer he told me that it's technically impossible to make this email fully adaptive as shown in Sketch file. Email clients is not able to support all code properly.

For example overlay is not supported.

Also, there is 3 collums. It's impossible to make them adaptive and fully supported by all email clients.

Check out your mail box.

Emails could be fully adaptive if they are simple and in one column. I guess your designer made email template for the first time, and didn't know that all constraints(me too).

https://giphy.com/gifs/3ohc1eeVjercWD2N6E/fullscreen

If email template more complex, they leave it static.

https://giphy.com/gifs/3ohc0Q593jnQGQpSa4/fullscreen

My developer was trying to do this template responsive, but here what we get.

http://www.giphy.com/gifs/3oFzm5KFysIv43pyo0

You should ask developer that you find, if he can make it adaptive, supported on all devices and look 100% like it Sketch file. I don't think he can.

1. I see 2 possible solutions:
   Leave email template static.
2. Make it little bit simple and mobile first.

For example:

I will attach this template revision and responsive template to my message.

Thanks!