If whitening isn’t working anymore…

Preview text: You might be overdoing it.

FenoWednesday, Apr 1, 2026 at 1:42 PM EasternKlaviyo
FenoIf whitening isn’t working anymore…
Subject
If whitening isn’t working anymore…
Preview text
You might be overdoing it.
From
hello@feno.co
Brand
Feno
Sent
Wed Apr 1, 2026, 1:42 PM ET
Size
58 KB
Images
8
Links
11, 5 of them buttons
Subject length
35 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 35 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.

Subject
If whitening isn’t working anymore…
Date
Wed, 01 Apr 2026 17:42:04 +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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Servers it passed through, newest first

  1. from kl-203-20-3.kmta.shared.klaviyomail.com [170.203.20.3] by our receiving server with ESMTPS
  2. 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

Apr 3, 2026 1:12 PMYou already fixed your habits. So why now?
Apr 3, 2026 2:29 AMEveryone’s claiming theirs... have you?
Apr 2, 2026 2:30 AMDon't forget about your next favorite toothbrush
Apr 1, 2026 1:42 PMIf whitening isn’t working anymore… (this email)
Mar 29, 2026 1:31 PMWhen brushing doesn’t stay consistent…
Mar 27, 2026 5:11 PM⏳ Don’t Lose Your Reserved Smartbrush
Mar 27, 2026 1:33 PMIf you’ve been struggling with dry mouth…

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