They Sent It

Your plaque is more alive than you think

It gets harder to remove the longer it sits.

FenoMonday, Aug 10, 2026 at 4:09 PM EasternKlaviyo
FenoYour plaque is more alive than you think
Subject
Your plaque is more alive than you think
Preview text
It gets harder to remove the longer it sits.
From
hello@feno.co
Brand
Feno
Sent
Mon Aug 10, 2026, 4:09 PM ET
Size
75 KB
Images
8
Links
14, 5 of them buttons
Subject length
40 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 40 characters; its average is 37.

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Subject
Your plaque is more alive than you think
Date
Mon, 10 Aug 2026 20:09:52 +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
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  1. 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

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Sent just before and after

Aug 26, 2026 3:15 PMMouthwash may be doing less than you think
Aug 21, 2026 3:10 PMYou might be doing this while reading this email
Aug 17, 2026 4:43 PMWhen brushing feels impossible
Aug 10, 2026 4:09 PMYour plaque is more alive than you think (this email)
Aug 9, 2026 4:27 PM⏳ Don’t Lose Your Reserved Smartbrush
Aug 8, 2026 4:26 PM, your dentist is about to notice something
Aug 7, 2026 4:25 PM50,000 people switched. Are you next?

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