The 90-minute rule
Preview text: Fun fact, ... Your core body temperature drops about 90 minutes before sleep. It's one of…
No image available for this email.
- Subject
- The 90-minute rule
- Preview text
- Fun fact, ... Your core body temperature drops about 90 minutes before sleep. It's one of…
- From
- hello@
sandlandsleep.com - Brand
- Sandland Sleep
- ESP
- Klaviyo
- Sent
- Tue Jun 23, 2026, 12:15 AM ET
- Sent to
- sandlandsleep.com
- Size
- 8 KB
- Images
- 1
- Links
- 4
- Subject length
- 18 characters
Against Sandland Sleep's usual
Sent in the 12 AM hour, which holds 2% of its emails; 46% arrive in the 12 PM hour. The subject is 18 characters; its average is 33.
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
- Sandland Sleep <[email protected]>
- Subject
- The 90-minute rule
- Date
- Tue, 23 Jun 2026 04:15:02 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-76
- Return-Path domain
- mail.sandlandsleep.com
- DKIM signature
- d=sandlandsleep.com s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- from o1369.shared.klaviyomail.com [149.72.184.220] by our receiving server with ESMTPS
- by recvd-…-qps9m with SMTP
- from (unnamed) by geopod-ismtpd-76 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
Sent just before and after
| Jul 6, 2026 12:15 PM | Long weekend wreck your sleep? 25% off through midnight | |
| Jun 24, 2026 9:14 PM | The science behind your sleep struggles | |
| Jun 23, 2026 9:11 PM | Still thinking about it? | |
| Jun 23, 2026 12:15 AM | The 90-minute rule (this email) | |
| Jun 8, 2026 12:15 PM | You fall asleep fine. Then 3am, wide awake and too warm. | |
| Jun 4, 2026 10:34 PM | The science behind your sleep struggles | |
| Jun 3, 2026 10:33 PM | Still thinking about it? |
More from Sandland Sleep
All Sandland Sleep emailsThe science behind your sleep struggles
Nov 3, 2026 5:48 AM
Nov 2, 2026 5:47 AM
Nov 2, 2026 4:24 AM
Why I started Sandland (a personal note)
Oct 20, 2026 4:10 AM
Your 28% off expires at midnight
Oct 17, 2026 4:09 AM
"I'm finally sleeping through the night"
Oct 16, 2026 4:08 AM
The science behind your sleep struggles
Oct 15, 2026 8:19 AM
The science behind your sleep struggles
Oct 15, 2026 4:07 AM







