I'm making an email template to be used with AWS. In the body text of the email we add a {username} variable which gets replaced by the user's actual username. In our case the username will be an email address and when Amazon works their magic it gets replaced with a mailto: link
e.g:
<p>{username}</p>
will become
<p>example#domain.com</p>
I want to be able to change the style of the link, but don't have access to the format of the <a> tag itself. Also because email clients don't widely recognise style tags I can't use CSS so all solutions must be inline.
I've tried:
<p style="color: #fff !important">example#domain.com</p>
and that has no effect.
Any ideas very welcome!
Fiddle for the sake of testing.
I using sharepoint list having email template and using variables to get values.
Here is the sample code:
A new <span style="text-transform: lowercase;">$RequestType$</span> request has been submitted.
RequestType - StackOverflow
When I am receiving email in outlook I want text as:
A new stackoverflow request has been submitted.
But its coming as:
A new StackOverflow request has been submitted.
I don't see any issues in the code, need some suggestions.
Apparently MS Outlook only partially supports text-transform: https://www.campaignmonitor.com/css/text-fonts/text-transform/
Only uppercase is supported.
Your letters remain uppercase inside span, they are just displayed as lowercase, maybe that's why it doesn't work well... see what I mean:
Instead use PHP:
strtolower("Hello WORLD.");
https://www.w3schools.com/php/func_string_strtolower.asp
or JavaScript:
str.toLowerCase();
https://www.w3schools.com/jsref/jsref_tolowercase.asp
This looks good:
In most of my emails, the image included may not be present. In such cases the broken image icon is displayed along with my alt text.
Problem Explanation:
While sending an HTML email along with an <img> tag, at cases this image may not be there (404). As the image URL is dynamic, I cannot verify the existence of the image before sending the email. So it displays a broken image icon. I want to get rid of this icon.
JSFiddle
Code Snippet:
<img alt="NA" src="http://www.somerandomdomain.com/error.png" width="120" >
I am need of a solution compatible with all major email clients.
Have tried onerror handler, but it does not work in email clients.
Also have tried text-indent: -9999px;, it works in Outlook but not
in Gmail.
When the negative indent is changed to positive Outlook
scrolls to the right which is a mess.
The solutions mentioned in possible duplicate, are for the web. But my question is clearly about the HTML emails, where JS and objects does not work like the solutions provided.
When generating email, check if that image exists (Example in PHP):
$url = 'http://www.somerandomdomain.com/error.png';
$headers = #get_headers($url);
if (strpos($headers[0],'200') !== false) {
echo "<img alt='NA' src='{$url}' width='120'/>";
}
I want to protect my e-mail address on webpages.
But I don't know JavaScript and PHP. I know only HTML and CSS.
So, please help me how to protect my email address with CSS only.
It's very simple. You can protect your email address with only HTML & CSS. You don't need to know about PHP or Java script. Try below code.
Simple HTML and CSS code:
<!doctype html>
<html>
<head>
<title>Protect e-mail with only css</title>
<style type="text/css">
.e-mail:before {
content: attr(data-website) "\0040" attr(data-user);
unicode-bidi: bidi-override;
direction: rtl;
}
</style>
</head>
<body>
<span class="e-mail" data-user="nohj" data-website="moc.liamg"></span>
</body>
</html>
Output of above code:
jhon#gmail.com
Please note:
Here I'm just used two extra attributes.
1) data-user write your e-mail id user name in reverse.
2) data-website write your e-mail id website in reverse.
Try this code:
.e-mail:before {
content: "\006a\0068\006f\006e\0040\0067\006d\0061\0069\006c\002e\0063\006f\006d";
}
<span class="e-mail"></span>
This is just the email encoded in hexadecimal.
One of the simple and effecting ways of embedding emails in html is by using hex values!
for example hex value for john#smith.me is:
%6A%6F%68%6E%40%73%6D%69%74%68%2E%6D%65
and you can use the following tag in your HTML Code
email me
This is a really simple and effective way of embedding email in a webpage.
you have hided the "maito:" and the email in this way.
you can use this tool to generate the %64 hex code
you can also use this tool to generate the hex code
As you likely know: Obfuscation techniques can't be foolproof and harvester bots will continue to improve. There are a number of arguments against obfuscation.
That being said, here are some additional techniques to the rather interesting ones you already mentioned.
HTML techniques:
Using html comment signs or substituting html entities has some years ago already been shown to be a pretty weak approach.
Using an image instead of text is a pain for most users, including the non-visually impaired as they can't cut and paste. It works well though.
One interesting pure HTML approach that allows for using a hyperlink was suggested a while back.
Email me.
CSS techniques:
These are of course not fool proof either. Besides what you've mentioned already:
Using CSS display:none is also useful. Bots that simply strip out style tags will include the hidden text in the harvested address.
jhon<span style="display:none">-anti-bot-bit</span>#gmail.com.
A web icon font could be used to pull in an # icon and it's possible to do this in a way that won't trip up screen readers. I've not seen a web icon font with an # icon for obvious reasons, but this would work.
Update: Font Awesome now has an # icon. Maybe someone suggested it after seeing this post ;-).
You can combine the two answers above (Ans1 & Ans2) to make the mailto works with the css for usability.
<style type="text/css">
.e-mail:before {
content: attr(data-website) "\0040" attr(data-user);
unicode-bidi: bidi-override;
direction: rtl;
}
</style>
<a href="mailto:%6A%6F%68%6E%40%67%6D%61%69%6C%2E%63%6F%6D">
<span class="e-mail" data-user="nhoj" data-website="moc.liamg"></span>
</a>
You can use Font Awesome:
In <head>:
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
In <body>:
<p>john<i class="fa fa-at"></i>hotmail.com</p>
I would recommend using JavaScript if possible over CSS and JavaScript as it can manipulate the dom. Easily you could do it with code like
<div onclick="document.write('joe#' + 'joemaller.com')">Email Me</div>
This a simple but not ideal solution.
JFiddle; http://jsfiddle.net/yFKUD/
Flexbox allows you to change the order of items inside a containing element, we can use this to separate and reorder parts of our email address in the html but present them to the user as a legible whole.
div {
display: flex;
flex-direction: row-reverse;
justify-content: flex-end;
}
<div>
<span>example.com</span>
<span>#</span>
<span>george</span>
<span>Email me at the following address: </span>
</div>
Here we use flex-direction: row-reverse to reverse the order of the elements.
A scammer could probably work this out if he tried hard, all he has to do is reverse the elements to recreate the address. For a more thorough attempt we can specify the order manually.
div {
display: flex;
}
<div>
<span style="order: 3">#</span>
<span style="order: 4">example.com</span>
<span style="order: 1">Email me at the following address: </span>
<span style="order: 2">user</span>
</div>
Here we use order to specify our own order so a simple reverse cannot be used.
Unfortunately doing any of this breaks copy/paste so your user will have to type out the address, but it is better than receiving correspondence from another Nigerian prince. Use this in conjunction with other techniques for a truly bulletproof email address.
I tend to use this for my clients:
hello@goodbye.com
Pretty sure it works 90% of the time judging by the experience and requires no CSS/JS to work. Though I don't think there is any point of protecting emails nowadays anyway as almost all CDN-s do it for you automatically using JS.
Use the reCAPTCHA Mailhide API
Mail hide using api
Use encoder Formate
Encode site url to convert data email
Hide email using CSS trick (direction property)
Demo
Scramble the email - While coding HTML, jumble and write the email address in reverse direction. (a#b.com should be written as moc.b#a). We can then use CSS stylesheet to reverse the email address againwhen rendering. Here's the sample HTML code with CSS.
<style type="text/css">
.backwards {
unicode-bidi:bidi-override;
direction: rtl;
}
</style>
<span class="backwards">moc.b#a</span>
If someone copies your email address, it will available in the reverse direction. Would not work on older browsers.
How to hide your email address from spammers with JavaScript
Let's look at more advanced methods that use javascipt to hide the email (name#domain.com). Remember to use noscript tags since some users prefer to disable javascript in browsers:
Basic Email Script
<script language=JavaScript>
<!--
document.write("name" + "#" + "domain.com");
//--> </script>
2. Basic Mailto: Email Script with Link Text
<script language=JavaScript>
<!--
var user = "name";
var host = "domain.com";
var link = user + "#" + host;
document.write("<a hre" + "f=ma" + "ilto:" + user + "#" + host + ">" + link + "</a>");
//--> </script>
3. Inline JavaScript
<a href="#" onclick="JavaScript:window.location='mailto:'+'name'+'#'+'domain'+'.com'" >Send me an email</a>
External JavaScript file
<script language="JavaScript" src="email-encoding.js"></script>
The external javascript contains the code mentioned in 2 above.
I was checking for techniques for a while now. While I agree that obfuscation is not a total solution, I believe it's still pragmatical as I benefit it by getting get zero spam with obfuscation.
Some of the techniques discussed:
CSS trick to make e-mail only visible to humans (see accepted answer from #user3087089)
Add HTML garbage to trick scrapers (see answer from #fzzylogic)
Inject e-mail using JS (as suggested by #Dean and others)
Another technique that was not suggested here to never have your e-mail in plain form through using base64 encoding. You simply encode your e-mail and use JavaScript to inject it to the webpage.
I built safe-email project on GitHub to combine all of the listed techniques. It's pretty easy to use with free license. You can check examples in CodePen. Feel free to use it & dig it and contribute.
It's vanilla-JS only, lightweight with no dependencies and you configure it with Base64 encoding of your e-mail.
I used for some time a similar JavaScript technique that allowed the "mailto" functionality while keeping the HTML valid :
HTML :
user
JavaScript (small jQuery plugin)
// mailto anti-spam
;(function($) {
$.fn.mailTo = function() {
this.each(function() {
var user = $(this).html() || false,
domain = $(this).attr('href')
.replace('http://www.', '')
.replace('www.', '')
.replace('http://', '')
.replace('/', '') || false;
if (user && domain) {
$(this).html(user + '#' + domain).attr('href', 'mailto:' + user + '#' + domain);
}
});
return this;
};
})(jQuery);
Usage
// protect inline e-mails
$('.js-contact').mailTo();
http://codepen.io/ced-anamorphik/pen/QwVrKZ
But lately Google Chrome displayed a phishing warning on the website.
As this is not entirely wrong (technically the link is spoofed indeed), is there another simple solution to this ?
To disable people to copy it try like:
span.email {
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
And HTML:
<span class="email">jack#gmail.com</span>
JSFIDDLE
And to protect against bots use CSS Codedirection:
<span style="unicode-bidi:bidi-override; direction: rtl;">
moc.elpmaxe#zyx
</span>
I want to write an application that sends html formatted email. I have the css and html files as I want them. I'm trying to send the email with the embedded css using the style element like so:
<style type="text/css">
h1 {border-width: 1; border: solid; text-align: center}
</style>
<h1>Title</h1>
<p>Content of the email</p>
It works in some clients (e.g. it works on Mac OSX mail app) and not others (e.g. it doesn't work when reading the email in gmail). When I translate the above to:
<h1 style="border-width: 1; border: solid; text-align: center">Title</h1>
<p>Content of the email</p>
Then it works everywhere. What I'm looking for is a way to place the css as style properties on their corresponding dom elements according the css rules I defined. So for a given file.css and file.html I want to create a new file result.html which displays correctly but in which all the css is embedded as style properties in the dom elements. Any ideas?
This is what you're looking for:
http://www.mailchimp.com/labs/inlinecss.php
Hope this helps!
Drop the style tag, use inline styles.
I have the same issue - I have a php app that sends out a confirmation email once a customer has placed an order. In various email clients it's fine, but web based clients tend to strip out the HEAD tag, which includes the STYLE tag - so any style is lost.
While it's still a good idea, as #Zack mentions, to include a plain text version of what you wanted to say, nobody likes to read plain text. I doubt that Zack is reading Stack Overflow on Lynx, for example.
A quick Google search for 'CSS inliner php' brings up: http://classes.verkoyen.eu/css_to_inline_styles
Also it seems that this question has been asked before on stackoverflow (at least once), at least for php, and there was a Ruby answer given in php class to inline css styles?
I want to write an application that sends html formatted email
Never do this. Email MUST be plain text. You cannot even rely on attachments.