How to Extract All Email Addresses From a Website

In the course of an investigation, we would often like to find all contact information, such as emails or phones from a company, both for marketing / sales purposes and as investigative leads. Collecting them manually can be quite time-consuming, and does not guarantee that the full list of emails can be found.

Thankfully there are a variety of tools that can help us with this task:

We can use the site: & intext: Google operators to find all pages containing emails that were indexed by Google. For example:

site:tesla.com intext:"@tesla.com"

In some cases, we’d be able to see the email itself on the search results page.

A better solution is to use an extension that automatically detects and scrapes email addresses from the webpage and enables you to extract them as a CSV.

Recommended extensions for email addresses extracting are:

• Email Extractor – discovers all the email addresses in the website you are visiting. Then, you can export all the emails in a CSV file
• Phantom Buster – Automatically extract emails from any website. Scrape email addresses on automatic and download to results to a spreadsheet.

Another cool option is to use the Bulk Email Extractor web app, which allows you to enter a list of URLs and scan all of them for email addresses that can be extracted to Excel.

Finally, you can also try completing the task using a code that runs on the HTML file and collects all email formats it finds. After the page you want to explore is loaded, right-click > inspect (or f12 / ctrl+shift+i ) to open the developer tools. Go to the console at the bottom of the developer tools and copy the following code:

var allelements = document.body.getElementsByTagName("*"); 
var rege = new RegExp("(^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+.[a-zA-Z0-9-.]+$)"); 
for (var i = 0; i < allelements.length; i++) { if (rege.test(elems[i].innerHTML)) { console.log(elems[i].innerHTML); } }

The above code will run on all the elements in the page’s HTML file, look for the elements in an email address format, and print them out.