Looking for the best email paywall for Gmail? Here’s what to look for — and where Rythm fits.
An email paywall is a simple idea: if a stranger wants to reach your inbox, they pay a small amount to get through. Known senders walk right in. Strangers put a small amount on the line to earn the slot. Real people rarely hesitate; mass outreach falls apart.
For Gmail specifically, the things that matter are whether it attaches to your existing account (no new address), whether it plays nicely with Gmail’s own filters and Priority Inbox, how the guest list gets built, and where the money actually goes when a stranger pays.
Known senders walk right in. Everyone else pays the cover.
How the options compare for Gmail
| Rythm | Tanstaafl | Reacher | DIY Gmail filters | |
|---|---|---|---|---|
| Price per month | $1.65 | ~$3–$5 (sats) | Project inactive | Free (but fragile) |
| Setup time | ~12 minutes | Multi-step | N/A | Hours — and breaks often |
| Works with existing Gmail | Yes — OAuth, no migration | Limited | N/A | Yes but no contacts operator |
| Automatic guest list | Yes — contacts, sent, starred, frequency | Manual | N/A | Breaks at ~1,500 chars |
| Where the money goes | Straight to your wallet | Varies | N/A | Nobody — there is no payment |
| Project status | Actively built | Experimental | Inactive | Always free — always fragile |
Why Rythm is worth considering
- Attaches to your existing Gmail or Google Workspace via OAuth in about 10 seconds — no new address.
- We never hold your money. When a stranger pays the cover charge, it settles to the wallet you connected.
- The guest list builds itself from your contacts, sent folder, starred mail, and the people you actually reply to.
- $1.65 a month. At about four cents per stranger, roughly 1.4 paid strangers a day covers the subscription.
- CASA Tier-2 security audit completed (39 of 39 test cases passed).
Frequently asked
Will a Gmail filter plus my contacts do the same thing?
Not really. Gmail’s filter syntax has no rule for "anyone in my contacts", and a hand-written whitelist breaks around 1,500 characters. You can get part of the way there — you can’t get all the way there without building a new layer on top.
Does a paywall block real people I want to hear from?
Known senders walk right in, so the question is really about first-time messages. A real person sees a polite note with a one-tap link to pay the cover charge — default about four cents. Or you can rescue anything from the held-for-review folder in a single click; the sender is added to your guest list forever.
Does this mess up Priority Inbox or Gmail tabs?
No. Rythm uses its own labels. Priority Inbox, category tabs, and personal filters all keep working the way they always have.
What happens if the Rythm service has an outage?
Email delivers normally. If anything breaks on our end, nothing gets held up.
Can my Google Workspace admin block it?
Depending on the admin policies in your organization, an admin may need to allow the Rythm OAuth app. That is a standard third-party app approval flow.
Try Rythm. Your inbox, your rules.
$1.65 a month. Cancel anytime.
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