Labor Day Sale: Are you taking vitamin D without this?

Preview text: Save Up to 30% Now

Dr. Mark StenglerSaturday, Sep 5, 2026 at 11:01 AM EasternKlaviyo
Dr. Mark StenglerLabor Day Sale: Are you taking vitamin D without this?
Subject
Labor Day Sale: Are you taking vitamin D without this?
Preview text
Save Up to 30% Now
From
drstengler@markstengler.com
Sent
Sat Sep 5, 2026, 11:01 AM ET
Sent to
markstengler.com
Size
44 KB
Images
5
Links
7, 5 of them buttons
Subject length
54 characters

Against Dr. Mark Stengler's usual

Sent in the 11 AM hour, which holds 1% of its emails; 93% arrive in the 7 AM hour. The subject is 54 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]>
Subject
Labor Day Sale: Are you taking vitamin D without this?
Date
Sat, 05 Sep 2026 15:01:15 +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

  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-Message, X-Kmail-Ops, X-Report-Abuse

Report this email

Sent just before and after

More from Dr. Mark Stengler

All Dr. Mark Stengler emails

Get the Black Friday insights

We're collecting every Black Friday email from more than 50,000 brands as it lands. Get what we find: who starts first, the biggest discounts, and the subject lines that stand out.

Free. Unsubscribe anytime.