7 expert hacks for better travel sleep

Preview text: See the secret weapons Dr. Breus packs to sleep anywhere

Sleep DoctorMonday, May 18, 2026 at 3:30 AM EasternKlaviyo
Sleep Doctor7 expert hacks for better travel sleep
Subject
7 expert hacks for better travel sleep
Preview text
See the secret weapons Dr. Breus packs to sleep anywhere
From
newsletter@sleepdoctor.com
Sent
Mon May 18, 2026, 3:30 AM ET
Sent to
singularsleep.com, sleepdoctor.com
Size
84 KB
Images
14
Links
27, 8 of them buttons
Subject length
38 characters

Against Sleep Doctor's usual

Sent in the 3 AM hour, which holds 20% of its emails; 23% arrive in the 9 AM hour. The subject is 38 characters; its average is 37.

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
Sleep Doctor <[email protected]>
Subject
7 expert hacks for better travel sleep
Date
Mon, 18 May 2026 07:30:19 +0000 (UTC)
Message-ID domain
geopod-ismtpd-79
Return-Path domain
email.sleepdoctor.com
DKIM signature
d=sleepdoctor.com s=kl2
List-Unsubscribe
Present, one-click

Servers it passed through, newest first

  1. from o1364.shared.klaviyomail.com [198.37.148.224] by our receiving server with ESMTPS
  2. by recvd-…-lkkbk with SMTP
  3. from (unnamed) by geopod-ismtpd-79 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

May 24, 2026 3:30 AMThe Official Memorial Day Sale for 2026’s Best Mattresses 🇺🇸
May 21, 2026 1:00 PMA Gift For Your Best Summer Sleep Yet ✈️
May 20, 2026 3:30 AMVacation is for relaxing, not for earplugs
May 18, 2026 3:30 AM7 expert hacks for better travel sleep (this email)
May 17, 2026 5:36 AMSee something you like?
May 17, 2026 3:30 AMHow to beat jet lag + Last chance for 15% off
May 15, 2026 11:30 AM3 Days Only: 15% Off Your Home Sleep Study

More from Sleep Doctor

All Sleep Doctor 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.