Are you making this $2.4 billion mistake?
Preview text: America's most expensive placebo

Using this email in an article? Credit: Dr. Mark Stengler email via They Sent It, with a link to this page. Full-size image
- Subject
- Are you making this $2.4 billion mistake?
- Preview text
- America's most expensive placebo
- From
- drstengler@
markstengler.com - Brand
- Dr. Mark Stengler
- ESP
- Klaviyo
- Sent
- Tue Sep 22, 2026, 7:00 AM ET
- Sent to
- markstengler.com
- Size
- 42 KB
- Images
- 5
- Links
- 7, 6 of them buttons
- Subject length
- 41 characters
Against Dr. Mark Stengler's usual
Sent in its busiest hour, 7 AM, which holds 93% of its emails. The subject is 41 characters; its average is 58.
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
- Dr. Mark Stengler <[email protected]>
- Reply-To
- [email protected]
- Subject
- Are you making this $2.4 billion mistake?
- Date
- Tue, 22 Sep 2026 11:00:16 +0000
- Message-ID domain
- klaviyomail.com
- Return-Path domain
- k3.email.markstengler.com
- DKIM signature
- d=shared.klaviyomail.com s=def1; d=email.markstengler.com s=mtd1
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- 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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| Sep 29, 2026 7:00 AM | Flash Sale: Save 20% on your all-in-one boost for energy, memory, & longevity | |
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| Sep 22, 2026 7:00 AM | Are you making this $2.4 billion mistake? (this email) | |
| Sep 20, 2026 7:01 AM | New Podcast: Why People Think Science is Fraud | |
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Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Sep 22, 2026.








