11 best Gmail extensions you’ve never heard of
Gmail is used by more than one billion people. Not your parents, who are ride-or-die AOL email forever, but one billion other people. And every single one of…
GMass Blog
Category: Chrome Extensions
Chrome extensions can add incredible enhancements to your web browser — from a tiny but convenient change that’ll save you a few seconds to an entire robust software platform.
GMass itself is, of course, a Chrome extension that puts a world-class email marketing platform inside your Gmail account.
Here in on Chrome extensions archives page, you can read up on everything we’ve written about Chrome extensions.
You’ll find guides and lists on some of the best Chrome extensions out there (for Gmail and beyond).
You can learn about the technical side of Chrome extensions, if you’re developing one yourself or you’re curious about what goes on behind the scenes.
And you can read up on the features and enhancements surrounding the GMass Chrome extension as they happen.
Continue reading →
The story of our new pixel blocking Chrome extension
In 2022, we launched a new Chrome extension, called Tracker Blocker, that is a companion extension for GMass. If you’re using GMass to send campaigns, Tracker Blocker worked so…
Getting the timing of a Gmail Chrome extension content script just right
Today, after having been in this business for more than five years, I realized that a small percentage of people who installed our GMass Chrome extension never got…
Top 10 Chrome Extensions for 2026 (Features, Ratings)
Looking for the best Chrome extensions? Google Chrome lets you add multiple extensions to enhance its functionality. From ad blockers to email marketing tools, the Chrome Web Store…
10 Best Email Tracking Apps (Chrome Extensions) for Gmail and Outlook
Looking for the best email tracker Chrome extension for Gmail or Outlook? An essential tool in any email marketer’s arsenal, email trackers help you keep track of how…
We’ve launched our new extension design
We’ve just launched version 5.0.0 of the GMass extension, featuring a decidedly more modern design. (It no longer looks like a refugee from the 1990s.) Your Chrome browser…
How to send a cookie with a cross-origin XMLHttpRequest from a Chrome extension
When developing a Chrome extension, you might need to get an XMLHttpRequest that’s part of a content script to send cookies for a domain when making a request to…
My feelings on Google’s $15,000-$75,000 OAuth verification process and security assessment
Last October, Google announced that it would start being more stringent with software vendors building apps on top of the Gmail API. Specifically, developers using a “restricted” or “sensitive”…
How to handle Google’s disabling of inline installations of Chrome extensions
On June 12, 2018, Google disabled inline installation of Chrome extensions. This means that now you can’t directly install an extension from a company’s website–you can only do it…
Announcement! Chrome extension updated with new features
We’ve just released a new version of GMass with new features and a cleaner UI. Just reload Gmail to get the latest version of GMass and enjoy these…
How to redirect the user to a website after installing a Chrome extension
If you’re the developer of a Chrome extension, after a user installs your extension from the Chrome Web Store, you may want to redirect the user to a particular…
Mailtrack just did something brilliant
As the developer of two Chrome extensions, GMass and Wordzen, I’m always on the lookout for what other Chrome extension developers are doing. Mailtrack is a popular Chrome extension…