They Sent It

90% of babies are missing this

Yours doesn’t have to.

Persephone BiosciencesFriday, Oct 9, 2026 at 11:00 PM EasternKlaviyo
Persephone Biosciences90% of babies are missing this
Subject
90% of babies are missing this
Preview text
Yours doesn’t have to.
From
hello@persephone.bio
Sent
Fri Oct 9, 2026, 11:00 PM ET
Sent to
persephone.bio
Size
46 KB
Images
7
Links
10, 5 of them buttons
Subject length
30 characters

Against Persephone Biosciences's usual

Sent in the 11 PM hour, which holds 2% of its emails; 20% arrive in the 11 AM hour. The subject is 30 characters; its average is 32.

Email headers

What the brand's servers put on this email. Our receiving servers, the address we subscribed with and unsubscribe links are left out.

From
Persephone Biosciences <[email protected]>
Subject
90% of babies are missing this
Date
Sat, 10 Oct 2026 03:00:56 +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
List-Unsubscribe
Present, one-click

Servers it passed through, newest first

  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

Oct 11, 2026 6:55 PMWe studied a lot of 💩
Oct 10, 2026 7:59 PMHere’s 30% off to get started
Oct 10, 2026 6:54 PMWe test like lives depend on it
Oct 9, 2026 11:00 PM90% of babies are missing this (this email)
Oct 9, 2026 6:53 PMHere’s 30% off to get started
Oct 9, 2026 10:10 AMA closer look at the science inside
Sep 21, 2026 12:52 PMIs your baby missing this key to lifelong health?

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