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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.
Proof Google allows sending through SMTP service

September 18, 2020

Proof that Google allows sending from a gmail.com account through an external SMTP server

Ever since we launched the ability to hook your account up to an external SMTP provider and essentially “break” Gmail’s …

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ultimate guide to SMTP

August 4, 2020

The Ultimate Guide to SMTP (2024 update)

Want to learn about SMTP? This article contains everything you need to know about what it is and how it works.

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Office 365 SMTP settings

June 28, 2020

Setting Up Office 365 SMTP Settings (Updated Guide)

Want to know how to set up SMTP settings on Office365? This article contains everything you need to know to do this easily.

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Outlook SMTP settings

June 27, 2020

Outlook SMTP Settings (2024 Guide)

Want to know how to set up SMTP settings on Microsoft Outlook? This article contains everything you need to know to do this easily.

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High Volume Cold Email

June 15, 2020

How to send high volume cold email [beyond Gmail’s limits]

Most cold emailers can only send as many emails as their Gmail account allows, but I've invented a way to send far beyond those limits.

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Gmail SMTP settings

June 12, 2020

Gmail SMTP Settings: Easy Step-by-Step Setup Guide (with Screenshots)

Want to learn how to set up SMTP settings on Gmail? This article contains everything you need to know to do this easily.

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Yahoo mail SMTP settings

May 28, 2020

Yahoo SMTP Settings (Updated Guide)

Looking to set up Yahoo SMTP settings for your email needs? This article has everything you need to do this quickly.

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SMTP tech review

May 7, 2020

A technical review of popular SMTP Services [2024]

A technical review of popular SMTP services like SendGrid, Mailgun, Amazon SES, and Mailjet. Each has flaws, quirks, and distinguishing features.

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email analyzer

May 27, 2019

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 …

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January 7, 2019

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 …

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July 23, 2018

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 …

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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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