Cortisol: friend or foe?

Preview text: The answer might surprise you.

ZestFriday, Jul 24, 2026 at 10:01 AM EasternKlaviyo
ZestCortisol: friend or foe?
Subject
Cortisol: friend or foe?
Preview text
The answer might surprise you.
From
hello@takezest.com
Brand
Zest
Sent
Fri Jul 24, 2026, 10:01 AM ET
Size
55 KB
Images
22
Links
24, 1 of them buttons
Subject length
24 characters

Against Zest's usual

Sent in its busiest hour, 10 AM, which holds 38% of its emails. The subject is 24 characters; its average is 30.

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From
Jason from Zest <[email protected]>
Subject
Cortisol: friend or foe?
Date
Fri, 24 Jul 2026 14:01:12 +0000
Message-ID domain
klaviyomail.com
Return-Path domain
k3.send.takezest.com
DKIM signature
d=shared.klaviyomail.com s=def1; d=send.takezest.com s=mtd1
List-Unsubscribe
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  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

Aug 3, 2026 9:01 AMStill have questions?
Jul 30, 2026 12:03 PMDon't let jet lag win ✈️
Jul 28, 2026 5:01 PMShould you wait 90 mins to drink coffee?
Jul 24, 2026 10:01 AMCortisol: friend or foe? (this email)
Jul 22, 2026 10:01 AMThe ingredient behind smoother energy
Jul 19, 2026 1:30 PM"I used to set 5 alarms"
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