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New Features

GMass is always growing and evolving based on your feedback, requests, and mass email and cold email needs.

Whenever our team rolls out a new feature for GMass (or one of our other email deliverability tools), you'll find the announcement as well as a how-to guide here in the new features archives.

Read up on new features (or features that used to be new and are now more mature) and get rolling with everything GMass offers.

December 13, 2018

New! We’ll warn you if you use the wrong mail merge tags

Using the wrong merge tags in an email campaign is embarrassing. Now you'll get a popup warning if you try to send a campaign with the wrong merge tags.

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November 28, 2018

Announcing the launch of the Domain Deliverability Statistics Tool

Get email deliverability statistics and SMTP bounce codes for every domain on the planet.

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June 14, 2018

Send an email campaign as a reply to the most recent conversation

It's now possible to send an email campaign, where your message goes out as a reply to the most recent email thread with each person.

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May 22, 2018

How to unsubscribe a domain

You can now unsubscribe an entire domain from your Gmail mail merge campaigns sent with GMass. Unsubscribing a domain is …

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April 12, 2018

Integrate Salesforce with your Gmail mail merge campaigns

Here is how you integrate your Gmail mail merge campaigns with your Salesforce.com account. Using Salesforce's Bcc integration, it's easy.

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April 8, 2018

How to Build an Email List from your Gmail Account

In this post, I'll teach you how to build an email list from the emails sitting in your Gmail account. You can then easily send an email campaign to them.

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March 30, 2018

How to send a fast and simple mail merge in Gmail

Sending a mail merge in Gmail from a list of email addresses is very simple with GMass. That list can …

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February 19, 2018

How to use the “Inbox, Spam, or Promotions” email delivery testing tool

This is the guide to my free deliverability tool that tells you whether your email campaigns are making it to the Inbox, Spam, or Promotions folder.

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December 29, 2017

You can now pause your mail merge campaign

We just added a feature that allows you to pause and resume your Gmail mail merge campaign at will. When …

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November 29, 2017

SMTP Test Tool – FAQ

This is the FAQ for the SMTP Test Tool. Q: What’s going on here? A: This is a web-based SMTP …

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Just launched! World’s best SMTP server testing tool.

I just launched the world’s best web-based SMTP test tool. With my new tool, you can see the exact SMTP conversation …

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October 30, 2017

Improvements to the “Just create Drafts” feature

I just deployed some improvements to the “Just create Drafts” feature. As a reminder, this is the feature that allows you to create …

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