Guides on cold email, Gmail outreach, deliverability, and making AI work for your campaigns.
We're a brand-new team launching CMass in public beta. Here's who we are, why GMass inspired us, and how we're building Gmail mail merge powered by Claude — plus how to tell us what to build next.
May 30, 2026
Step-by-step: how to import a Google Sheet into CMass, map columns to merge tags, and send 500 personalized emails in under 10 minutes.
May 20, 2026
Most people send one follow-up and give up. Here's a practical framework for timing, what to write in each email, and when silence actually means no.
May 14, 2026
There's a lot of skepticism around AI-generated email. Here's an honest look at why it works when done right — and why it falls flat when done wrong.
May 8, 2026
Bounce rates, spam complaints, and unsubscribe rates all affect deliverability. Here's what to monitor and how CMass helps automatically.
Apr 30, 2026
A fair, side-by-side breakdown of features, pricing, and use cases. We built CMass, but we'll be honest about when GMass might be a better fit.
Apr 22, 2026
The legal requirements for commercial email aren't as complex as lawyers make them sound. Here's the plain-English breakdown.
Apr 15, 2026
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