The SendHustle blog
Guides and tutorials on email automation, cold outreach, mail merge, and getting more replies.
Page 9 of 55 · 657 articles
Gmail Bulk Sender Guidelines: The 2026 Rules They Actually Enforce
Gmail bulk sender guidelines moved to hard enforcement in Nov 2025. Here's which ones now trigger rejections and what to fix first.
Upcoming GMass pricing changes
Announcement about upcoming changes to GMass pricing and plans.
5 Impressive Ways Email Marketers Are Using GMass's Triggered Emails
How email marketers are using GMass's triggered emails, which go out automatically when a recipient opens, clicks on, or replies to a campaign.
5 Great Ways Cold Emailers Are Using GMass's Triggered Emails
How cold outreach pros are using GMass's triggered emails to close more deals by sending automated messages when prospects open, click, or reply.
Why GMass Is Better Than Instantly for Cold Email
GMass and Instantly are both popular cold email platforms. Here's a full comparison of the 2 including what each offers that the other does not.
MultiSend: Inbox Rotation Distributes a Campaign Across Email Accounts
Everything you need to know to take a single GMass email campaign and distribute it evenly across multiple email accounts.
How to Automatically Apply a Google Sheets Formula to a New Row
Google Sheets automatically add formula to new row walkthrough — how to have Sheets apply your formula down a column instantly.
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.
New in GMass: Instant Reply and Bounce Detection
GMass can now detect when someone replies to your campaign or when one of your message bounces the moment it happens — no more delays!
Cold Email Affiliate Marketing: 5 Best Strategies and Templates
Cold email affiliate marketing can be challenging. But it's a great option for cold emailers AND affiliate marketers with the right strategies.
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.
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.
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