Rated 5 out of 5 stars

Simply awesome! I have put gmail in the Thunderbird Sidebar which puts all email stuff in one place:
http://666kb.com/i/cs5go58pxogit7ssz.png

Thanks for the great work!

PS: a code snippet for scriptish that autohides the Gmail left sidebar:

@-moz-document domain('mail.google.com') {
body>div>div.nH>div.nH>div.nH>div.no>:first-child {
transform: translateX(-195px);
transition: transform 250ms ease 1111ms;
}
body>div>div.nH>div.nH>div.nH>div.no>:first-child+*>:first-child {
margin-left: -210px;
transition: margin-left 250ms ease 1222ms;
}
body>div>div.nH>div.nH>div.nH>div.no>:first-child:active,
body>div>div.nH>div.nH>div.nH>div.no>:first-child:hover,
body>div>div.nH>div.nH>div.nH>div.no>:first-child:focus,
body>div>div.nH>div.nH>div.nH>div.no>:first-child:target {
transform: translateX(0px);
transition-delay: 666ms;
}
body>div>div.nH>div.nH>div.nH>div.no>:first-child:active+*>:first-child,
body>div>div.nH>div.nH>div.nH>div.no>:first-child:hover+*>:first-child,
body>div>div.nH>div.nH>div.nH>div.no>:first-child:focus+*>:first-child,
body>div>div.nH>div.nH>div.nH>div.no>:first-child:target+*>:first-child {
margin-left: 0px;
transition-delay: 555ms;
}
}

based on:
https://userstyles.org/styles/36980/gmail-autohide-sidebar