Rythm vs Hey.com
Screener idea, no migration. About 5x cheaper per year.

Switching from Hey, SaneBox, Superhuman, or a Gmail filter stack you cobbled together. Without changing your email address.
Most users come to Rythm from one of three places. Hey.com, where the Screener works the way they want but the required @hey.com address ends up being the deal-breaker. SaneBox, where the AI sorting model produces false positives that bury real email in SaneLater or SaneBlackHole. Or a stack of native Gmail or Outlook filters that started as a few rules and grew into a maintenance burden no one signed up for.
Migration to Rythm is unusual in that there is nothing to migrate. You keep your existing email address. Your existing filters keep working. Your contacts list keeps working. The only thing that changes is the layer at the inbox door, which is replaced with a known-or-pay gate that auto-builds your guest list and charges unknown senders a small cover charge.
The field notes below cover each transition (Rythm vs Hey, Rythm vs SaneBox, Rythm vs Microsoft Defender 365) plus the underlying questions about how Rythm fits the email-protection landscape and why a known-or-pay gate is the structural shift this category needs.
Screener idea, no migration. About 5x cheaper per year.
Deterministic gate vs probabilistic AI sort. Roughly 4x cheaper.
An updated 2026 comparison covering the AI sorting model and the cost of getting it wrong.
The lighter layer next to the enterprise Defender stack.
Where deterministic gating sits next to bulk-spam filters, gateways, and AI sorters.
A comparison of the two shapes and why they answer different questions.
Two terms that sound similar and mean different things.
The structural decision behind Rythm and why ML is not in the filter.
A walkthrough for IT and security reviewers evaluating Rythm against the alternatives.
Keep your existing Gmail or Outlook. Cancel anytime.
Annual on Lightning includes one bonus month. See full pricing.