SMTP Archives - Mass Email & Mail Merge for Gmail

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.

September 15, 2022

Email Bounce Codes: The Complete Guide (Definitions, Solutions, and More)

A glossary of email bounce codes to help you understand why your emails weren't delivered. Plus steps and strategies to manage and to cut down on bounces.

April 21, 2022

How to Use GMass’s SMTP Relay to Send WordPress Transactional Emails

How to use GMass's SMTP relay service to send WordPress transactional emails like confirmations and receipts through your Gmail account.

Why GMass and SendGrid are better for campaigns

April 11, 2022

Why GMass + SendGrid is Better for Campaigns Than SendGrid Alone

You can send email campaigns via SendGrid's Marketing Campaigns — but it lacks the features of GMass. Instead, use GMass for emails with SendGrid for SMTP.

September 22, 2021

Introducing a new kind of SMTP Service

Instead of using SendGrid, Mailgun, or Amazon SES to send emails from your website, use the GMass SMTP service and have your emails sent by Google.

October 5, 2020

Postmark Review 2020 (Features, Limitations, Pricing)

Looking for a comprehensive Postmark review? This article covers its key features, major limitations, and pricing details.

September 24, 2020

SMTP.com Review 2020 (Features, Drawbacks, Pricing)

Looking for a thorough review of SMTP.com? This article highlights the key features, drawbacks and pricing details of SMTP.com

September 23, 2020

Mandrill Review 2020 (Features, Pricing, Drawbacks)

Looking for a detailed Mandrill review? This article highlights its key features, drawbacks, and pricing details to help you out.

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 …

August 4, 2020

The Ultimate Guide to SMTP (2021 update)

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

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.

June 27, 2020

Outlook SMTP Settings (2021 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.

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.

SMTP