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…
GMass Blog
Email, Gmail, and GMass — explained.
Practical guides, product updates, deliverability research, and experiments from the team building GMass.
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5 Actionable Email Marketing Statistics You Should Know
Thousands and thousands of emails flood our inboxes daily. Gmail even had to introduce segments into their inbox to clear the clutter from our daily lives. It’s becoming…
Gmail’s 69585 bounces and what they mean
Have you ever gotten a bounce after sending an email from Gmail with a 69585 bounce code that references a URL? Specifically, a bounce message that says: Your message…
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…
Campaign Reports Explained [+ interesting tidbits]
GMass takes a different approach to reporting and analytics than most Email Service Providers, and in this article you can learn how to access and analyze email campaign…
5 High-Yield Cold Email Outreach Templates
Cold email outreach “doesn’t work.” It’s “outdated and ineffective.” You’ve tried a few strategies that simply failed to get a response. Even used emojis, memes, and gifs to…
5 Ways to Get PR for Your Startup Without Spending a Penny
Most marketing tactics that big names tout require one thing you don’t have: Brand awareness. For example, generating backlinks by capitalizing on brand mentions that don’t have a…
Gmail Draft thinks To field is blank if invalid characters present in address
We’ve discovered that in certain situations, Gmail doesn’t save the addresses in the To field as part of a Draft, when invalid characters are present in the list…
Improvements to the “Just create Drafts” feature
I just deployed some improvements to the “Just create Drafts” feature. As a reminder, this is the feature that allows you to create individual Gmail Drafts for your mail merge campaign, so…
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…
How to configure a Sendgrid SMTP account for GMass
If you’re using the GMass unlimited sending option by connecting an SMTP service to GMass, you may have chosen Sendgrid as your SMTP service provider. If so, here is…