Back to all startups

Rythm

A bouncer for your inbox. Contacts get through. Strangers check in first.

Rythm adds a bouncer to your email so you control who reaches you. It builds a guest list from your Gmail or Outlook contacts, lets known senders through, and files unknown senders into a separate folder you can check on your terms. Strangers can pay a small cover charge to reach your inbox, with paid messages marked PAID and funds sent to your wallet. Rythm scans messages only to detect payment proofs and discards contents, never storing or sharing any email content.

https://rythm.xyz/

Discover startups similar to Rythm

InboxSwipe AI Reach inboxzero, one swipe at a time
FlareCRM A lightweight CRM that lives inside Gmail
RouteStack.ai BOOSTED The only MCP connecting AI agents to live travel data and checkout
Verifykit.io Verify users before they hit your DB, protect bounces, keep data clean
Receivly Send invoices, track payments, and automate reminders
MailShrimp Validate email addresses to clean your lists and avoid bounces
Tenarie BOOSTED Test, prove, and move faster in one connected cybersecurity workspace
Geysera Recover lost revenue with cart, browse, checkout, and winback emails