Founders get the worst inbox attacks. Here’s protection that actually works.
Founders attract a specific cocktail of email problems: recruiter spam, investor impersonation, Business Email Compromise attempts, AI-written cold outreach tuned to your LinkedIn, and about ten pitches a day from people who skimmed your landing page. The average BEC incident costs around $125,000 — the downside is real.
Rythm is a bouncer for your inbox. Known senders walk right in. Strangers put about four cents on the line to get through. Real people rarely hesitate. Mass outreach economics fall apart fast — sending 100,000 emails at four cents apiece is $4,000.
Enterprise-grade inbox protection at small-business prices. No IT department required.
How founders weigh the options
| Rythm | Proofpoint | SaneBox | Gmail native | |
|---|---|---|---|---|
| Monthly price | $1.65 | $3–7 per user | $7–36 | Free |
| Needs IT team | No — OAuth self-service | Yes — MX changes | No | No |
| Blocks AI-written cold outreach | Yes — economic friction | Arms race against AI | Arms race against AI | Losing the arms race |
| Stops investor / exec impersonation | Unknown senders gated by payment | Signature / policy-based | Limited — not its focus | Limited — DMARC only |
| Setup time | ~12 minutes, you | Days, with IT | ~1 day AI training | None |
| Strangers become | Income — payment to you | Blocked | A different folder | Nothing |
Why Rythm is worth considering
- Cheapest consumer option that also turns cold outreach into income — about 1.4 paid strangers a day covers the subscription.
- No IT department needed. Connect your Gmail or Outlook in 10 seconds; the whole setup takes about 12 minutes.
- Recruiter spam, investor pitch spam, and AI-written cold outreach all hit the same economic wall.
- The average BEC incident costs $125,000. Even if Rythm only prevents one, the math is absurd.
- Works inside the inbox you already use — no new address, no migration, no email-client switch.
Frequently asked
A legit investor or candidate is trying to cold-email me — do they get blocked?
No. They see a short, polite note with a one-tap link to pay the cover charge (about four cents). Serious people rarely hesitate over four cents. And nothing is deleted — you can rescue anyone from the held-for-review folder in one click, and they’re added to your guest list for good.
Why not just use Gmail’s spam filter?
Gmail’s filter is great at bulk spam. It’s not great at legitimate-looking cold outreach or AI-written phishing tailored to your LinkedIn. That’s the layer Rythm adds.
I get a lot of SaaS pitches via contact forms. Does this help?
If those forms deposit into your inbox as a stranger, yes — they hit the cover charge. If they come from a partner you’ve already emailed, the sender is already on your guest list.
Can I install this across my team?
Each member connects their own Gmail or Outlook under their own subscription. One plan, $1.65/month per person. No seat model, no per-user negotiation.
What about my calendar invites from strangers?
Calendar invites arrive through the same channel as email — strangers sending invitations get the cover-charge prompt like any other first-time sender.
Try Rythm. Your inbox, your rules.
$1.65 a month. Cancel anytime.
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