Tired of cold outreach? Here’s how to actually stop it.
Gmail’s spam filter is excellent at catching spam. It is not a cold-email filter. Cold outreach is, technically, not spam — it’s one human (or one scripted sequence) sending a personalized message to another. The filter has no reason to flag it. Neither do the unsubscribe lists; cold senders aren’t on them.
The thing that actually stops cold outreach is economics. Make sending cost money, and the cost collapses the math. At four cents per email, sending 100,000 is $4,000. Rythm is a bouncer at the door: known senders walk in, strangers put four cents on the line. Real first-time contacts rarely hesitate; mass outreach campaigns fall apart.
Spam filters guess. Rythm charges.
How the options handle cold outreach
| Rythm | Gmail native | Hey.com | SaneBox | |
|---|---|---|---|---|
| Blocks cold pitches | Yes — cover charge applies | No — not classed as spam | Manual approve/reject | Sorts into SaneLater |
| Catches AI-written pitches | Yes — same rule | Rarely | Still requires manual review | Losing ground to AI |
| Blocks legitimate first-time contacts | No — they can pay four cents | No | Until approved | Buries in SaneLater |
| Strangers become | Income | Nothing | Nothing | A different folder |
| Monthly price | $1.65 | Free | $8.25 | $7–36 |
Why Rythm is worth considering
- Makes cold outreach economically infeasible at scale. 100,000 emails = $4,000.
- Doesn’t touch messages from people you already know.
- Legitimate first-time contacts — a recruiter, a potential client — can still reach you by paying a small amount.
- The four cents that does come through lands in your wallet.
Frequently asked
What about legitimate sales outreach I might want to see?
If the pitch is worth four cents to the sender, it gets through and you get paid to read it. If it isn’t worth four cents, you weren’t going to buy anyway. Either outcome beats the current one.
Can a determined cold-email tool just pay the cover?
A few will. Most won’t — cold outreach works because sending is free. Any cost at scale breaks the economics, and the ones who do pay leave a clear payment trail in your records.
Will this block my actual clients?
Your clients are already on your guest list — you exchange email with them. The cover charge only ever applies to first-time senders who aren’t in your contacts, sent folder, starred messages, or reply history.
Does Gmail’s own "block sender" work for this?
You can block senders one at a time, but it’s reactive — the cold email already arrived and you spent attention on it. This flips the order: the stranger has to put four cents on the line before they can reach you at all.
Does it add a rule I have to maintain?
No. The guest list builds itself from your contacts, sent folder, starred, and inbox frequency. New clients you email get added automatically.
Try Rythm. Your inbox, your rules.
$1.65 a month. Cancel anytime.
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