Submit

Browse every extension by category.

All categories

Start from the job you need done.

All use cases

Starter kits for the way you work.

All professions

Extensions that upgrade the sites you already use.

All websites

Side-by-side verdicts and honest alternatives.

All comparisons

Free, single-page tools. No sign-up, most run right in your browser.

Chrome & browser
Privacy tests
Developer utilities
Images & media
Website inspector
Device checks
AI & productivity
All free tools

How-tos, safety explainers and data studies.

All guides
Submit an extension

↑↓ move · ↵ open · Tab filter · Esc close

GMass: Powerful mail merge for Gmail Chrome extension

GMass: Powerful mail merge for Gmail is a freemium marketing extension for Chrome. Sends mail merge campaigns and follow-ups from Gmail using Google Sheets data.

  • PriceFreemium
  • CategoryMarketing
  • Works inChrome, Edge, Brave (desktop)
  • ✓mail merge
  • ✓gmail
  • ✓email campaigns
Add to Chrome See alternatives

Best for

Anyone who needs this job done in Chrome

Featured in

Browse all categories.

GMass: Powerful mail merge for Gmail: FAQs

What does GMass: Powerful mail merge for Gmail do?

Sends mail merge campaigns and follow-ups from Gmail using Google Sheets data. It sits in the marketing category and runs as a Chrome extension, so it works right inside your browser.

Is GMass: Powerful mail merge for Gmail free?

GMass: Powerful mail merge for Gmail has a free version with optional paid plans for extra features.

Do I need an account to use GMass: Powerful mail merge for Gmail?

Some features of GMass: Powerful mail merge for Gmail may require an account. Check the listing before you install if that matters to you.

Who is GMass: Powerful mail merge for Gmail best for?

GMass: Powerful mail merge for Gmail suits anyone who needs a simple marketing tool in Chrome.

How do I install GMass: Powerful mail merge for Gmail?

Open GMass: Powerful mail merge for Gmail in the Chrome Web Store, click Add to Chrome, review the permissions in the pop-up, then click Add extension. Pin it from the puzzle-piece icon to keep it one click away.

How do I remove GMass: Powerful mail merge for Gmail from Chrome?

Go to chrome://extensions, find GMass: Powerful mail merge for Gmail and click Remove. You can also right-click its toolbar icon and choose Remove from Chrome.

Is GMass: Powerful mail merge for Gmail safe to use?

Check the permissions GMass: Powerful mail merge for Gmail requests when you install it, prefer versions that are actively updated, and review its privacy policy. Only keep extensions you actively use.

Does GMass: Powerful mail merge for Gmail work in Edge or Brave?

Most Chrome Web Store extensions, including GMass: Powerful mail merge for Gmail, can be installed in Chromium-based browsers such as Microsoft Edge and Brave. Some features may differ by browser.

Does GMass: Powerful mail merge for Gmail work on Android or iPhone?

No. Chrome's mobile apps don't run Chrome Web Store extensions, so GMass: Powerful mail merge for Gmail works on desktop Chrome and other Chromium browsers on Windows, Mac, Linux and ChromeOS.

What are the best alternatives to GMass: Powerful mail merge for Gmail?

There are several extensions that do a similar job. Browse the marketing category to compare options.

Which websites does GMass: Powerful mail merge for Gmail work with?

GMass: Powerful mail merge for Gmail works on most websites you visit in Chrome.

Does GMass: Powerful mail merge for Gmail slow down Chrome?

Most lightweight extensions have little impact, but every extension uses some memory. If Chrome feels slow, open More tools, then Task manager, to see how much GMass: Powerful mail merge for Gmail uses.