The SendHustle blog
Guides and tutorials on email automation, cold outreach, mail merge, and getting more replies.
Page 20 of 55 · 657 articles
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When I started GMass almost six years ago, it was just a simple extension for Gmail that let you send ...
How we're working around India's RBI recurring payments rule
If you live in India and use an Indian credit card to subscribe to software and other services, you’ve likely ...
New Feature: The Gate
You send out a campaign and get a bunch of replies asking for more information. Now you can easily and quickly REPLY to all those replies.
New Feature: Sentiment Analysis on Replies
We're now using AI to score every reply to an email campaign. Quickly see the sentiment score and whether the overall sentiment is positive or negative.
Sender Reputation Guide: How to Check & Boost It
Explore what sender reputation is, what affects it, and how you can boost your reputation and ensure more emails reach the inbox.
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.
Is Cold Emailing Illegal? (US, EU, UK, Canada, Australia Laws)
Discover if cold emailing is illegal in various countries and 4 best practices to ensure legal compliance.
Cold Email vs Spam: 5 Key Differences + 7 Handy Tips (2026)
Discover 5 key cold email vs spam differences, including their legality, and 7 actionable cold emailing tips to hit the inbox, not the spam folder.
Cold Email vs Cold Call: 6 Key Differences (2026 Guide)
Explore 6 cold email vs cold call differences, which approach is better, and how to improve your cold outreach.
Guide to using the Zapier integration
How to use Zapier to connect GMass to thousands of other apps to build whatever kind of email automations you might need.
Use our tools to fix your spam issue
You’ve determined that emails you send with GMass are going to the Spam folder or are getting blocked. You’ve already ...
Guide to using webhooks
GMass now supports webhooks for the following types of events: Sends Opens Clicks Replies Unsubscribes Bounces What’s a webhook? There’s ...
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