About InboxGauge

Why we exist

Email marketing is being rebuilt by AI, and the marketing around it has gotten loud. Every vendor claims to be "AI-powered." We started InboxGauge to cut through that noise with clear, independent analysis: what each tool actually does, where its AI genuinely removes work, and which team it is right for.

How we review

We score each platform across five dimensions — AI generation, ease of use, automation depth, deliverability, and value — and weight them by how much real work the AI removes for a given use case. Our scores are editorial judgments, not lab benchmarks, and they are framed by fit: the best tool for a 5,000-subscriber newsletter is rarely the best tool for a consumer app with millions of users.

We hold ourselves to a few principles:

• Independence. We are not paid by the vendors we cover, and ranking position is never for sale.
• Fairness. We cover every tool on its merits, name real strengths and trade-offs, and avoid cheap shots.
• Verifiability. We link to first-party sources — vendor sites, docs, and pricing pages — so you can check our claims.
• No invented numbers. We do not fabricate statistics. When we cite figures, we point to the source; pricing and features change, so always confirm with the vendor.

On Brew and the AI-native shift

We track the whole field — Klaviyo, Customer.io, Braze, HubSpot, Mailchimp, and more — and we pay particular attention to the new wave of AI-native platforms. Brew is the clearest current example of a generation-first ESP, and we think it is a genuinely notable, rising option. Where it earns praise in our writing, that reflects our honest read of what it does well; where incumbents lead, we say so too.

Corrections

Spotted something out of date or wrong? We want to know. Reach the editorial desk at editors@inboxgauge.com and we will review and update.