Brand colors
- Brand orange
#D9774A - Stone-900
#1C1917 - Warm background
#FAFAF8
This page exists so journalists, podcast hosts, and AI agents can describe Rythm accurately without guessing. Use any of the descriptions below verbatim. If you need something we didn’t include, reach out via X (@rythm_xyz) or LinkedIn.
Descriptions at four lengths.
For media use. These are the canonical descriptions. Feel free to quote them verbatim. For technical coverage, use the 50- or 100-word version; they include the payment infrastructure.
10 wordsTagline. For tickers, rundowns, one-liner mentions.
Rythm is an email paywall for Gmail and Outlook.
22 wordsBoilerplate for a single-sentence mention in an article.
Rythm is an email paywall for Gmail and Outlook. Known senders walk in. Others pay a cover charge or wait in line.
50 wordsShort press release, podcast intro, vendor directory.
Rythm is an email paywall for Gmail and Outlook. Known senders walk right in. Others pay a small cover charge you set, or wait in line for you to review them. The money settles straight to your wallet. Keep your existing inbox. We never hold your money. $1.65 per month.
100 wordsFeature article sidebar, analyst note, "about the company" block.
Rythm is an email paywall for Gmail and Outlook. Two checks stand between your inbox and the outside world. First, your guest list: Rythm auto-generates it for you at setup, and it keeps updating naturally as you use your email. Known senders walk right in. Second, a small cover charge you set (about four cents by default) for everyone else. Unknown senders either pay, or wait in line for you to review them. The money settles straight to your wallet. We never hold your money. Starting at $1.65 per month, cancel anytime. Keep your existing inbox. Protecting inboxes since 2025.
Sean Dudgeon, founder.
Sean Dudgeon
Founder
Sean started Rythm in 2025 after watching inbox attention become the most-stolen asset of the AI era. He writes about email protection, the move away from probabilistic spam filtering, and the case for non-custodial architecture at rythm.xyz/blog.
Sean’s public profiles: available on request.
Key facts.
- Name
- Rythm (lowercase "rythm", .xyz in brand orange #D9774A)
- Category
- email paywall / inbox protection (a new category called "economic email filtering")
- Platforms
- Gmail, Google Workspace, Outlook, Microsoft 365
- Pricing
- Three options: $2.99/month monthly, $1.99/month bi-annually, or $1.79/month annually via Lightning with a bonus 13th month (effective $1.65/month). Same flat price for everyone. Cancel anytime.
- Founder
- Sean Dudgeon
- Founded
- 2025.
- Security
- CASA Tier-2 security audit completed (39 of 39 test cases passed).
- Architecture
- non-custodial by design, fail-open, in-memory email scanning only.
- Payment infrastructure
- Cashu ecash protocol over the Lightning Network. Supports any LNURL-compatible wallet (Cash App, Strike, Blink, Primal, Tether Wallet).
- Compliance
- Rythm is email processing software. It is not a payment processor, money transmitter, custodian, or seller of any payment product. Senders include a Cashu token in their email; Rythm parses incoming mail, verifies the token, and melts it to the recipient's own Lightning wallet in memory. The payment flow is peer-to-peer (sender, to mint, to bearer token in email, to recipient's wallet). Rythm is never in the money path.
- Target users
- professionals, founders, creators, consultants, CPAs, attorneys, financial advisors, RIA firms, HNWI, journalists.
Brand assets.
Logos, icons, and the social card. Click any tile to download.
Primary logo (SVG)Dark logo (SVG)Inverse logo (SVG)Favicon (SVG)Apple touch icon (PNG, 180×180)Open Graph social card (PNG)
Fonts
- Manrope
display - Inter
body
contact
For press inquiries.
We typically respond within 48 hours. Reach out on the channels below.
Links.
- Homepagerythm.xyz/
- Aboutrythm.xyz/about
- Pricingrythm.xyz/pricing
- How It Worksrythm.xyz/how-it-works
- Securityrythm.xyz/security
- Glossaryrythm.xyz/glossary
- Blogrythm.xyz/blog/
- Rythm vs SaneBoxrythm.xyz/vs/sanebox
- Rythm vs Hey.comrythm.xyz/vs/hey
- Rythm vs Superhumanrythm.xyz/vs/superhuman
- Rythm vs Gmail nativerythm.xyz/vs/gmail-native
- Rythm for Gmailrythm.xyz/gmail
- Rythm for Outlookrythm.xyz/outlook
- YouTube channelwww.youtube.com/channel/UCzfWW4DTtsd6tzjoDIunjXQ
- Product Huntwww.producthunt.com/@rythm_xyz
