One size doesn't fit every mouth

Preview text: Your dental arch isn't one-size-fits-all either.

Feno

Monday, Sep 28, 2026 at 4:50 PM EasternKlaviyo

FenoOne size doesn't fit every mouth

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One size doesn't fit every mouth - email from Feno

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Subject: One size doesn't fit every mouth
Preview text: Your dental arch isn't one-size-fits-all either.
From: hello@feno.co
Brand: Feno
ESP: Klaviyo
Sent: Mon Sep 28, 2026, 4:50 PM ET
Size: 77 KB
Images: 14
Links: 19, 5 of them buttons
Subject length: 32 characters

Against Feno's usual

Sent in the 4 PM hour, which holds 10% of its emails; 12% arrive in the 3 PM hour. The subject is 32 characters; its average is 37.

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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: One size doesn't fit every mouth
Date: Mon, 28 Sep 2026 20:50:29 +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

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from (unnamed) by kmta-mta-green-….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

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Sent just before and after

	Oct 1, 2026 8:32 PM	Why 10,000+ switched to Feno—before it sells out
	Sep 30, 2026 7:57 PM	20,000 people switched. Are you next?
	Sep 28, 2026 7:55 PM	You left better brushing behind
	Sep 28, 2026 4:50 PM	One size doesn't fit every mouth (this email)
	Sep 22, 2026 8:53 PM	⏳ Don’t Lose Your Reserved Smartbrush
	Sep 21, 2026 3:08 PM	Dry mouth isn’t nothing
	Sep 20, 2026 8:43 PM	20,000 people switched. Are you next?