How to send high volume cold email [beyond Gmail’s limits]
If you’re a cold emailer using any cold email platform other than mine, you’re likely subject to limits in the hundreds of emails per day. For most people,…
GMass Blog
Category: SMTP
As an email platform, we’re eyeballs deep in the world of SMTP here at GMass.
And here in the SMTP archives you’ll find everything we’ve written on the GMass blog about SMTP, including:
- How to use a third-party SMTP with GMass to break Gmail’s limits and send virtually unlimited emails
- GMass’s own SMTP service for transactional emails
- Reviews of SMTP services
- Our tools to analyze your SMTP settings to flag any potential issue
- And all other SMTP-related tips and findings
You may also be interested in our page on GMass’s SMTP integration, where you can learn all about how GMass works with external SMTP services in one place.
Continue reading →
Gmail SMTP Settings: Easy Step-by-Step Setup Guide (with Screenshots)
Looking to set up your Gmail SMTP settings? In this article, I’ll detail everything you need to know about configuring your Gmail SMTP settings. This step-by-step guide will…
Yahoo SMTP Settings (Updated Guide)
Want to set up Yahoo SMTP settings for your Yahoo Mail account? To make this process easier for you, I’ll cover what Yahoo SMTP settings are and how…
A technical review of popular SMTP Services [2026]
Over the 20 years I’ve been building email marketing software, I’ve used or come across almost every SMTP service on the market. While plenty of articles exist comparing…
Our new Email Analyzer checks for SPF, DKIM, and blacklists
The new Email Analyzer is for the email marketer that wants to check the SPF and DKIM of their email messages and check the IP address of their email…
New fast SMTP sending option
Speed has never been one of GMass’s strengths. Until now. If, for example, you need to send 1 million emails in an hour, then GMass isn’t the right…
Apply to use OUR own SMTP services and overcome Gmail’s limits
GMass gives you the ability to send unlimited emails by connecting a third-party SMTP service to your account. This allows you to effectively break Gmail’s sending limits. If…
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 test tool. If you’re familiar with SMTP servers…
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 between the client and the SMTP server. You…
How to get around Sendgrid’s domain whitelabel requirement
On April 6, 2020, SendGrid changed its sender verification requirements for new accounts created since April 6, 2020. Accounts created after this date are required to verify individual…
How to send unlimited emails in Gmail using an SMTP server
You can now send virtually unlimited emails in Gmail. It works by connecting a third party SMTP service like SendGrid, Mailgun, or Mailjet to your GMass account. (Or…
Using the “Just create Drafts” option with unlimited SMTP sending
We recently announced the official launch of unlimited sending in Gmail. It works by allowing you to connect your GMass account to an external SMTP service like Sendgrid…