Monthly
$2.99/month
Pay $2.99 every 30 days by card. Cancel anytime.
- •One inbox
- •Card via Square
- •30-day billing cycle
effective rate, annual lightning
$1.65/ month
Pay annually with Lightning. Get a bonus 13th month. Cancel anytime.
Secure My InboxThree payment options below. Pay by card via Square, or by Lightning.
Three payment options.
Same product on every option. Same flat price for individuals and teams. Pick the cadence that fits how you like to pay.
Bi-annual (6 months)
$1.99/month
Billed $11.94 every 6 months by card. Effective $1.99/month.
- •One inbox
- •Card via Square
- •$11.94 every 182 days
Best value
Annual via Lightning
$1.65/month effective
$1.79/month for 12 months ($21.48 once), plus one bonus month for paying upfront. Effective $1.65/month over 13 months.
- •One inbox
- •Pay one Lightning invoice at checkout
- •13 months of access for $21.48
Why pricing this low works.
Rythm is structurally lightweight. We are not running AI models or scoring every message. The system makes a fast, deterministic, in-memory check before email reaches your inbox: paid, or on your guest list? That is it. No inference pipelines, no threat-intel feeds, no model training. Less compute, less infrastructure, less cost. We pass the savings to you.
There is no lock-in. We earn your business every month.
How Rythm pricing compares.
Rythm is roughly 5 times cheaper than Hey.com, 4 times cheaper than SaneBox, and 18 times cheaper than Superhuman. It is also the only one where unknown senders pay you. Numbers below cite each vendor’s public pricing page where available; estimates are flagged as such.
| Tool | Annual cost | vs Rythm |
|---|---|---|
| Rythm | ~$21 (annual Lightning) | — |
| Hey.com | $99 (per Hey public pricing) | ~5x more |
| SaneBox | $84 to $432 (per SaneBox public pricing) | ~4 to 21x more |
| Clean Email | ~$120 (per Clean Email public pricing) | ~6x more |
| Superhuman | $360 (per Superhuman public pricing) | ~18x more |
How payment works.
Pay with a card (processed by Square) or by Lightning. The product is the same on every tier.
- •Monthly card subscription, $2.99/month, billed every 30 days
- •Bi-annual card subscription, $11.94 every 6 months, effective $1.99/month
- •Annual Lightning, $21.48 paid once for 12 months plus a bonus 13th month, effective $1.65/month
- •No setup fee, no onboarding fee, no hidden charges
- •Same flat price for everyone. No volume discounts. No enterprise tiers.