They Sent It

10% Off, 48 Hours Only ⏰

Let’s make the decision easier.

KOSThursday, Sep 17, 2026 at 5:51 PM EasternKlaviyo
KOS10% Off, 48 Hours Only ⏰
Subject
10% Off, 48 Hours Only ⏰
Preview text
Let’s make the decision easier.
From
hello@kos.com
Brand
KOS
Sent
Thu Sep 17, 2026, 5:51 PM ET
Size
41 KB
Images
17
Links
17, 8 of them buttons
Subject length
25 characters

Against KOS's usual

Sent in the 5 PM hour, which holds 13% of its emails; 22% arrive in the 10 AM hour. The subject is 25 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.

Subject
10% Off, 48 Hours Only ⏰
Date
Thu, 17 Sep 2026 21:51:31 +0000 (UTC)
Message-ID domain
geopod-ismtpd-87
Return-Path domain
send.kos.com
DKIM signature
d=kos.com s=kl2
List-Unsubscribe
Present, one-click

Servers it passed through, newest first

  1. by recvd-…-5v8dk with SMTP
  2. from (unnamed) by geopod-ismtpd-87 with HTTP

Other sending headers (names only): X-Kmail-Account, X-Kmail-Flow, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse, X-SG-EID, X-SG-ID, X-Entity-ID

Report this email

Sent just before and after

Sep 28, 2026 9:07 AMHow can one ingredient do so much
Sep 23, 2026 11:02 AMWe built this for your gut's diversity
Sep 18, 2026 5:52 PMFinal Hours For 10% Off ⏳
Sep 17, 2026 5:51 PM10% Off, 48 Hours Only ⏰ (this email)
Sep 17, 2026 10:03 AMFiber deserves a rethink
Sep 15, 2026 5:50 PMGot Questions? We've Got Answers 🙋
Sep 14, 2026 5:48 PMStill On Your Mind? 🌱

More from KOS

All KOS 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. You'll get a confirmation email first, and you can unsubscribe anytime.