December 10, 2025

GMass turned 10 this year, and in that time our users collectively sent more than 9 billion emails. That number …

November 27, 2025

GMass's new technique to remove the open pixel from campaign messages in your Sent folder to prevent you from triggering false opens.

November 24, 2025

Want to send a beautifully-designed email in Gmail like a newsletter, eCommerce promo, or other marketing message? Gmail has always made …

November 20, 2025

Two techniques you can use to send a GMass campaign from your boss's email account (or another person's account) inside of Gmail.

November 10, 2025

GMass's unique From address replacement ensures authentication for Gmail.com senders, alias users, and others on our in-house SMTP. Here's how it works.

October 7, 2025

GMass can now instantly approve you to send large campaigns through our own SMTP server once you've hit Gmail's limits. Here's how.

September 29, 2025

A complete guide to the Google Sheet connection box in GMass, including how to use the spreadsheet picker and optional settings.

September 24, 2025

How to send bulk sales quotes fast — all by using mail merge personalization right inside of your Gmail account.

September 17, 2025

How to run a Google Forms mail merge — where you automatically send a personalized email to anyone who fills out your form.

September 9, 2025

How to set up an invoice mail merge using Google Sheets and Gmail to save hours every month over manual attaching and sending.

September 3, 2025

How to format Google Sheet data for a successful mail merge using GMass — including column headers, catching typos, and more.

September 2, 2025

When to use Google Docs vs Microsoft Word mail merge tools — and, if you're sending emails, why to skip both and use Google Sheets + GMass.