We test like lives depend on it

Preview text: Third-party tested, clinically backed

Persephone BiosciencesMonday, Aug 24, 2026 at 10:57 AM EasternKlaviyo
Persephone BiosciencesWe test like lives depend on it
Subject
We test like lives depend on it
Preview text
Third-party tested, clinically backed
From
hello@persephone.bio
Sent
Mon Aug 24, 2026, 10:57 AM ET
Sent to
persephone.bio
Size
36 KB
Images
7
Links
9, 4 of them buttons
Subject length
31 characters

Against Persephone Biosciences's usual

Sent in the 10 AM hour, which holds 10% of its emails; 20% arrive in the 11 AM hour. The subject is 31 characters; its average is 32.

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From
Persephone Biosciences <[email protected]>
Subject
We test like lives depend on it
Date
Mon, 24 Aug 2026 14:57:57 +0000
Message-ID domain
klaviyomail.com
Return-Path domain
k3.hello.persephone.bio
DKIM signature
d=shared.klaviyomail.com s=def1; d=hello.persephone.bio s=mtd1
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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-Flow, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse

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Sent just before and after

Aug 28, 2026 11:00 AM90% of babies are missing this
Aug 26, 2026 10:59 AM👋 I'm Stephanie
Aug 25, 2026 10:58 AMWe studied a lot of 💩
Aug 24, 2026 10:57 AMWe test like lives depend on it (this email)
Aug 23, 2026 4:17 PM90% of babies are missing this
Aug 23, 2026 10:56 AMHere’s 30% off to get started
Aug 23, 2026 5:40 AMIs your baby missing this key to lifelong health?

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