September 13, 2017

GMass is written in C# and JavaScript and makes heavy use of a C# component called MimeKit. We recently upgraded to version 1.18, and it broke our code.

September 12, 2017

Gmail Error: You have reached a limit for sending mail. your message was not sent. If you’re sending mail merge emails from …

September 8, 2017

In looking for a Windows disk space monitor for my farm of servers, I was shocked at how many of the tools on the first page of Google SUCK.

August 31, 2017

Gmass offers a feature where you can send auto follow-ups in stages to people until they open or click on the email. Learn more about this feature today!

August 10, 2017

It’s been a long time in the making, but GMass finally works with Google Inbox. We’re so excited that we’re …

August 3, 2017

In Gmail you can use the "Send mail as" settings, but this can impact your email deliverability if sent through external SMTP servers.

July 27, 2017

I’m launching an email newsletter today focusing on Gmail productivity! If you’re a GMass user, then you’re also one of …

July 25, 2017

This 2017 guide to domain blacklists covers the most popular public DNSBLs like Spamhaus and SURBL and private lists like the Barracuda and AOL blacklists.

July 15, 2017

There are certain situations where you may be eligible for a refund from GMass. For example: You subscribed the wrong …

July 11, 2017

I just fixed a bug that was causing non-English characters in the To “Name” of a sent email to be corrupted. …

July 9, 2017

We analyze spam and email deliverability issues by sending your campaign to a seed list of ten different secret email addresses we maintain.

June 15, 2017

We've re-engineered how GMass connects to Gmail to make it so that you can send mail merge campaigns that are a whopping 35 MegaBytes in size.