Outlook SMTP Settings (2026 Guide)
Microsoft Outlook’s SMTP settings let you configure the email client of your choice (Gmail, Yahoo, Thunderbird, etc.) to send emails from your Outlook address. Alternatively, you can configure…
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Email, Gmail, and GMass — explained.
Practical guides, product updates, deliverability research, and experiments from the team building GMass.
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How to send a mail merge to TWO people per row
What 99% of users need to do is send a personalized email to a few hundred people where each of those few hundred people get their own email,…
How to block IP Addresses in an AWS/Windows/IIS environment
Here’s the problem — you’re hosting a Windows server running IIS on AWS, and your web app is getting hammered with requests that look like this: https://www.mywebsite.com/?q=%23Hcker%3Cbody%20oninput%3Djavascript%3Aalert(1)%3EHcker These…
Will the new Hey email service eat Gmail’s lunch?
I’m an email expert. Here’s what I think. Every couple of years, a new-fangled email service launches and generates a lot of buzz on Twitter and in the…
Update a Google Sheet with Campaign Data (Opens, Clicks, Replies)
You’re probably using Google Sheets to send most (if not all) of your campaigns in GMass. So it only makes sense that you’d want to get campaign data…
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,…
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…
Conscientious cold emailers can personalize the “To:” header
It seems silly. You’re used to personalizing your cold email campaign’s Subject. You’re used to personalizing its Message. You’re used to starting off your email with “Dear {FirstName}.”…
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…
How to send multiple emails with different attachments in Gmail
Have you ever wondered how to send multiple emails with different attachments in Gmail? Well, you can now easily send a mass email or mail merge in Gmail…
The 5 Best YAMM Alternatives We Found (Unlimited Emails, More Features)
You’re here looking for YAMM alternatives (aka Yet Another Mail Merge) — and I get it. YAMM catches a lot of people’s eyes because it’s just about as cheap…
Advanced Techniques with the Google Picker API
If your app needs to let a user pick a file from his Google Drive, you might consider using the Google Picker API. I recently implemented the Picker…