<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=1822615684631785&amp;ev=PageView&amp;noscript=1"/>

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.

December 16, 2024

ColdSMTP: GMass’s Game-Changing Cold Email Sending Server

Cold emailing has lost its way. Every single day I see rookies and experts alike posting about how they’re sinking …

Continue Reading

November 15, 2024

The 5 Best Cold Email Infrastructure Providers (Hands-On Reviews)

I tested out all the cold email infrastructure providers to figure out which are best options for deliverability, cost, setup, mailboxes, and more.

Continue Reading

November 14, 2024

What Are Cold Email Infrastructure Services? (Helpful Guide, Recs, More)

Cold email infrastructure services are private sending servers — and also help set up domains, mailboxes, and more. Here's your complete guide.

Continue Reading

November 5, 2024

How to Use Multiple SMTP Servers in GMass

With GMass you can add multiple SMTP servers to your account, to choose which one you use based on the campaign you're sending and breaking Gmail's limits.

Continue Reading

September 17, 2024

How to Send Transactional Emails with the GMass API

You can send full-fledged email campaigns using the GMass API. But… you can also use the GMass API to send …

Continue Reading

January 26, 2024

How GMass Helps Gmail.com + SMTP Senders Achieve DMARC Compliance

Gmail.com users who send through an external SMTP service are not DMARC compliant. Here's GMass's solution to fix that so you meet Google's requirements.

Continue Reading

September 6, 2023

How to Get Around Mimecast Blocks

Is Mimecast blocking the emails you're sending? Here are steps you can take to get around Mimecast blocks so your emails make it to the inbox properly.

Continue Reading

August 22, 2023

How to Choose the Right SMTP Service for GMass

If you're going to use a third-party SMTP service to send high-volume email campaigns in GMass, here's what you want in the service you choose.

Continue Reading

August 19, 2023

Confused About SMTP Options in GMass?

GMass offers a few different SMTP options: Using our accounts on other servers, our in-house server, transactional relay, and more. Here's how they differ.

Continue Reading

August 17, 2023

How to Use the DKIM Settings in GMass — And Why You Should

How to set DKIM in GMass when you're using an SMTP service to send through Gmail, either your own SMTP account or one of GMass's in-house options.

Continue Reading
Email bounce codes - the complete guide

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.

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

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.

Continue Reading

Join the 300,000+ others using GMass to send their best emails ever

Install in 30 seconds — no credit card or sign up form required

Try GMass for free Then check out the quickstart guide to send your first mail merge email in minutes!

GMass