A note from Dr. Kenny Brown
Preview text: What I saw in the operating room, and why it led to Feno.

Using this email in an article? Credit: Feno email via They Sent It, with a link to this page. Full-size image
- Subject
- A note from Dr. Kenny Brown
- Preview text
- What I saw in the operating room, and why it led to Feno.
- From
- hello@
feno.co - Brand
- Feno
- ESP
- Klaviyo
- Sent
- Fri Oct 30, 2026, 1:31 PM ET
- Size
- 57 KB
- Images
- 14
- Links
- 11, 2 of them buttons
- Subject length
- 27 characters
Against Feno's usual
Sent in the 1 PM hour, which holds 9% of its emails; 12% arrive in the 3 PM hour. The subject is 27 characters; its average is 37.
Email headers
What the brand's servers put on this email. Our receiving servers, the address we subscribed with and unsubscribe links are left out.
- From
- Feno <[email protected]>
- Subject
- A note from Dr. Kenny Brown
- Date
- Fri, 30 Oct 2026 17:31:57 +0000
- Message-ID domain
- klaviyomail.com
- Return-Path domain
- k3.send.feno.co
- DKIM signature
- d=shared.klaviyomail.com s=def1; d=send.feno.co s=mtd1
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- from (unnamed) by kmta-mta-blue-….servers.clovesoftware.com with SMTP
Other sending headers (names only): X-Mailer-Info-Extra2, X-Mailer-Info, X-Mailer-Info-Extra, X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse
Sent just before and after
| Nov 3, 2026 12:51 PM | Why 20,000+ switched to Feno | |
| Nov 2, 2026 12:50 PM | 20,000 people switched. Are you next? | |
| Oct 31, 2026 11:08 AM | Halloween tip from a surgeon: it's how often, not how much | |
| Oct 30, 2026 1:31 PM | A note from Dr. Kenny Brown (this email) | |
| Oct 29, 2026 4:39 AM | 📱Brush Smarter, Live Longer: Personalized prevention | |
| Oct 28, 2026 1:33 AM | ⏳ Don’t Lose Your Reserved Smartbrush | |
| Oct 27, 2026 1:32 AM | Why 20,000+ switched to Feno |
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20,000 people switched. Are you next?
Nov 2, 2026 12:50 PM
Halloween tip from a surgeon: it's how often, not how much
Oct 31, 2026 11:08 AM
📱Brush Smarter, Live Longer: Personalized prevention
Oct 29, 2026 4:39 AM
⏳ Don’t Lose Your Reserved Smartbrush
Oct 28, 2026 1:33 AM
Oct 27, 2026 1:32 AM
Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Oct 30, 2026.












