Hi!
I made a new Thunderbird icon. I tried to make it as similar to original one as I can, but mantaining the Papirus look.
Here the Papirus Icon:

Here the actual Thunderbird icon:

And here, my proposal:

And here the SVG:
I know it needs more work, but I'm no so familiarized bye the shadows and lights Papirus guidelines, so, If you like it, you can modify or tell me what I need to do. ;)
Thanks!
Papirus use layering style with dark (down layer) tone to light (up layer), because shadow not good looking if used light down layer and dark up layer.
See firefox

for compare

I've watched the Firefox.SVG and tried to do the same with Thunderbird.
It looks like that:

Is this more correct?
Thanks!
Yes it's right, BUT i mean postal envelope - it's light layer but he on down and shadow from bird not good looking (colors blured)

Also this

solution only used another colors or cut stroke/shadow
Very Good :+1:
But see other icons - we not use more objects and layers, because it's not good looking with little icon size 16px, 22px and 24px.
Need test it.
For example

and with some fixes:

Maybe need colorize postal envelope

The white envelope looks so great! I like it so much!!
I hope to learn more to help us in near future. I'll keep trying. ;)
Yes, now thunderbird use white envelope, but later used light-yellow.
Papirus like color game :smile:
@jEsuSdA Ok i'm optimize soon this icon for size with light envelope
done

Looks really great! Thanks a lot for your efforts! ;)
Most helpful comment
done
