.netease_mail_readhtml .foo, .netease_mail_readhtml .foo{}
Email is wrapped with class="netease_mail_readhtml". CSS is prefixed with the same but will only apply to the first class in a list. So with this code the first class gets double prefixed, the second one works.
.bloop_container .foo
_:-webkit-full-screen, :root .foo
@media screen and (pointer) { .foo}
@media screen and (min-width:0\0){ .foo }
This broken media query will also show in Outlook 00–03 so you may need to add an IE conditional comment.
_:-webkit-full-screen, :root .foo
This won’t render on iOS devices but will render on desktop so may need a max-device-width media query.
_:-webkit-full-screen, :root .foo
This won’t render on iOS devices but will render on desktop so may need a max-device-width media query.
.body
AOL also removes class from the body tag so you can use .body to avoid AOL.
.Singleton .foo
[class^="apple-mail"] .foo
Also targets iOS 13.
If the color-scheme is set to light dark or auto then the class is removed and this no longer works.
_:-webkit-full-screen, _::-webkit-full-page-media, _:future, :root .foo
@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) and (-webkit-min-device-pixel-ratio: 2), (min-resolution: 2dppx) and (hover: none){
_:-webkit-full-screen, _::-webkit-full-page-media, _:future, :root body:not(.Singleton) .foo {}
}
Media queries detect the device size to filter out iPhones. Using :not(.Singleton) filters out Apple Mail desktop.
.mail-detail-content .foo
Comcast wraps code with class="mail-detail-content". This also targets Libero.
#edo-container .foo
Will cover both iOS and Android.
.edo-email-view .foo
.edo .foo
body[marginwidth][marginheight] .foo{}
#msgBody .foo
meta ~ * .foo
title ~ * .foo
The head and body structure of the email is removed, making content in the head, siblings of that in the body, so we can target with this. Applies to Thunderbird, Freenet (title element only), Orange.fr, and Samsung.
@media screen and (max-width: 480px) {
u + .body .gmailmobile {
display: block!important;
}
}
u + .body .foo
Gmail changes the doctype to <u></u>. This is placed adjacent to a div that inherits class and id from the body tag.
You must include a doctype tag.
div > u + .body .foo
Gmail changes the doctype to <u></u>. This is placed adjacent to a div that inherits class and id from the body tag.
You must include a doctype tag.
@supports (-webkit-overflow-scrolling:touch) and (color:#ffff)
u + .body .foo
Any class or ID name prefixed with an unsupported character will kill all the styles following it.
body[style*="overflow-wrap:break-word"]
@supports (-webkit-overflow-scrolling:touch) and (color:#ffff) { .foo }
[class^="apple-mail"] .foo
Also targets Apple Mail 12.4 on desktop.
If the color-scheme is set to light dark or auto then the class is removed and this no longer works.
@supports (-webkit-overflow-scrolling:touch) and (aspect-ratio: 1 / 1) { .foo }
-webkit-overflow-scrolling:touch is only supported on mobile devices.
aspect-ratio is not supported on older versions of iOS.
.mail-detail-content .foo
Libero wraps code with class="mail-detail-content". This also targets Comcast.
#cm_mail_smart_body .foo
.body > div > div > .wrapper .foo
Nine inserts a couple of divs between the body and the wrapper. Same hack also targets Samsung and possibly others.
.unused.foo
Notes 8 will strip the unrecognised class and render the code behind it.
.foo[class^="ox-"]
Open-Xchange powers a number of different email clients including Comcast, Libero, 1&1 MailXchange, Network Solutions Secure Mail, Namecheap Email Hosting, Mailbox.org, 123-reg Email, acens Correo Professional, Home.pl Cloud Email Xchange, Virgin Media Mail, and Ziggo Mail.
They prefix class and ID names with ox- so we can target them with this.
meta ~ * .foo
title ~ * .foo
The head and body structure of the email is removed, making content in the head siblings of that in the body, so we can target with this. Applies to Thunderbird, Freenet (title element only), Orange.fr, and Samsung.
<!--[if mso | ie]>
<td>ALL OUTLOOK</td>
<![endif]-->
<!--[if mso 9]>
<td>OUTLOOK 2000</td>
<![endif]-->
<!--[if mso 10]>
<td>OUTLOOK 2002</td>
<![endif]-->
<!--[if mso 11]>
<td>OUTLOOK 2003</td>
<![endif]-->
<!--[if mso 12 | mso 14 | mso 15 ]>
<td>OUTLOOK 2007/10/13</td>
<![endif]-->
<!--[if mso 12]>
<td>OUTLOOK 2007</td>
<![endif]-->
<!--[if mso 14]>
<td>OUTLOOK 2010</td>
<![endif]-->
<!--[if mso 15]>
<td>OUTLOOK 2013</td>
<![endif]-->
<!--[if mso 16]>
<td>OUTLOOK 2016</td>
<![endif]-->
<!--[if mso 16]>
<td>WINDOWS 10 MAIL</td>
<![endif]-->
@media (min-resolution: 1dpi) {
body[data-outlook-cycle] .foo {
display: block!important;
}
}
[data-ogsc] .foo{}
When changing a color style in dark mode, Outlook will add data-ogsc to the element. When changing a background-color style in dark mode, Outlook will add data-ogsb to the element.
This requires adding styles that Outlook will change to a wrapping element.
[data-outlook-cycle*="INSERT_STYLES"] .foo{}
Where it says "INSERT_STYLES" you need to keep that text as it is and not actually insert your styles.
This will target only non-Microsoft email addresses (@hotmail, @live, @outlook, etc).
.foo\0{}
The \0 gets removed as part of the HTML cleanup. Be aware that Gmail will remove a style block with this code, so it needs to be included in a separate <style> block.
This can also be added directly to a style, like .foo{ background: red\0/;}.
body[data-outlook-cycle] .foo{}
This attribute is added to both iOS and Android apps. It also renders in webmail if you drop the body tag and just use the attribute.
.olm-fragment-custom .foo{}
This must be placed in a <style> block placed inside the <body> of the email. It won’t work if placed in the <head>.
_:-webkit-full-screen, _::-webkit-full-page-media, _:future, :root body:not(.Singleton) .foo
The stuff before .body will target WebKit desktop apps on Mac (Apple Mail and Outlook Mac), then we add :not(.Singleton) to remove Apple Mail.
This also targets Spark desktop app.
Note that this will not work for non-Outlook accounts.
@media (display-mode: standalone) {
[class~=""x_foo""]{}
}
Outlook PWA supports the same targeting as Outlook.com and Outlook apps. However, its display-mode is set to standalone so we can target it with the display-mode media query.
[class~="x_foo"]{}
Outlook.com prefixes class names with x_ but doesn’t do this on attribute selectors. So <div class="foo"> can be targeted with [class="x_foo"] and it’ll only apply to Outlook.
[owa].foo x:default .foo
.moz-text-html .foo
#secdiv
meta ~ * .foo
title ~ * .foo
#MessageViewBody
.body > div > div > .wrapper .foo
Samsung inserts a couple of divs between the body and the wrapper. Same hack as Nine.
body[style="overflow-y:hidden;width:auto !important; font-family: sans-serif"] .foo{}
Email is opened in an iframe and these styles are added to the body.
_:-webkit-full-screen, _::-webkit-full-page-media, _:future, :root .body:not(.Singleton)
Same target as Outlook for macOS.
<!--[if tonline]> T-Online <![endif]-->
<!--[if false]> T-Online <![endif]-->
<!--[if !true]> T-Online <![endif]-->
Supports any conditional comment.
@media screen and (-moz-device-pixel-ratio){
class {
// add styles here
}
}
meta ~ * .foo
title ~ * .foo
The head and body structure of the email is removed, making content in the head siblings of that in the body, so we can target with this. Applies to Thunderbird, Freenet (title element only), Orange.fr, and Samsung.
.moz-text-html .foo
This class is placed on a div inserted between the body and the wrapper so you can also do something like body > div > .wrapper .foo.
_:-ms-input-placeholder, :root .foo
_:-ms-fullscreen, :root .foo
.foo{
background:/* red */;
font-size: /* 50px */;
color: /* white */;
}
Yahoo and AOL will remove comment markers inside a style and render the content left behind.
.& .foo{}
Yahoo and AOL will replace the .& with their wrapping ID name. It can also be used to target element selectors (like .&h1{}) and the wrapping div itself (with .&{}).
@media screen yahoo{ .foo }
Yahoo & AOL remove invalid media query selectors so will render the above as @media screen {}. Yahoo doesn’t support max-device-width which makes it tricky to split mobile but we can use max-width.
Be sure to keep the space between yahoo and {. If you use it without a space (yahoo{) then it may also render some of the code in Outlook.com.
id="★foo"
AOL will strip this out but Yahoo will leave it. AOL also strips <title> and empty <style> elements.
.foo{background:red !yahoo}
Add !yahoo after a style. (This could be any word.)
This will also render on some older versions of Notes.
<noscript>
<style>
.& .foo{}
</style>
</noscript>
Although it’s run as a separate company, the same targeting works for Yahoo Japan and Yahoo.com. However, Yahoo Japan displays the email in a sandboxed iframe and we can separate it with a noscript tag that Yahoo.com will ignore.
Need help? Can't find what you’re looking for?
Start a discussion on the GitHub repo or ask the #email-code channel on Email Geeks Slack.