The SPF Serum That Does More

Preview text: Three benefits of #3 The Brilliance Tinted Serum SPF50+

RationaleTuesday, Sep 8, 2026 at 1:00 AM EasternKlaviyo
RationaleThe SPF Serum That Does More
Subject
The SPF Serum That Does More
Preview text
Three benefits of #3 The Brilliance Tinted Serum SPF50+
From
noreply@edm.rationale.com
Sent
Tue Sep 8, 2026, 1:00 AM ET
Size
75 KB
Images
15
Links
35, 15 of them buttons
Subject length
28 characters

Against Rationale's usual

Sent in the 1 AM hour, which holds 14% of its emails; 17% arrive in the 4 AM hour. The subject is 28 characters; its average is 30.

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
RATIONALE <[email protected]>
Subject
The SPF Serum That Does More
Date
Tue, 08 Sep 2026 05:00:17 +0000 (UTC)
Message-ID domain
geopod-ismtpd-32
Return-Path domain
edm.rationale.com
DKIM signature
d=rationale.com s=kl2
List-Unsubscribe
Present, one-click

Servers it passed through, newest first

  1. by recvd-…-x8gmb with SMTP
  2. from (unnamed) by geopod-ismtpd-32 with HTTP

Other sending headers (names only): X-Kmail-Account, 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 29, 2026 4:00 AMThe Questions We Get Asked Every Day
Sep 22, 2026 4:00 AMTamsyn's Radiant Results
Sep 15, 2026 4:00 AMStart Here: Targeted Formulations, Thoughtfully Paired
Sep 8, 2026 1:00 AMThe SPF Serum That Does More (this email)
Sep 5, 2026 11:00 PMCleansing Do’s and Don’ts
Aug 31, 2026 9:30 PM#4 The Nourishing Cleanser 500mL Returns
Aug 29, 2026 1:00 AMMore Than a Skin Tint

More from Rationale

All Rationale emails

Sent the same day by similar brands

Same ESP and the closest weekly volume, sent on Sep 8, 2026.

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.