Your child is in a critical window
Preview text: The first 1,000 days matter the most
Use this example
- Subject
- Your child is in a critical window
- Preview text
- The first 1,000 days matter the most
- From
- hello@
persephone.bio - ESP
- Klaviyo
- Sent
- Mon Sep 7, 2026, 1:52 PM ET
- Sent to
- United States (poopforthecure.us)
- Size
- 46 KB
- Images
- 4
- Links
- 11, 6 of them buttons
- Subject length
- 34 characters
Against Persephone Biosciences's usual
Sent in the 1 PM hour, which holds 15% of its emails; 20% arrive in the 11 AM hour. The subject is 34 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
- Your child is in a critical window
- Date
- Mon, 07 Sep 2026 17:52:48 +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
- from (unnamed) by kmta-mta-green-….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
Sent just before and after
| Sep 11, 2026 11:35 AM | We test like lives depend on it | |
| Sep 10, 2026 11:32 AM | Here’s 30% off to get started | |
| Sep 9, 2026 1:53 PM | Most probiotic companies start with the strains | |
| Sep 7, 2026 1:52 PM | Your child is in a critical window (this email) | |
| Sep 5, 2026 1:51 PM | 90% of babies are missing this | |
| Sep 3, 2026 1:50 PM | 👋 I'm Stephanie | |
| Sep 3, 2026 11:13 AM | Is your baby missing this key to lifelong health? |
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Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Sep 7, 2026.
